As a microbiology graduate student, I can personally attest to the effectiveness of UV lights. Our Superpickle bio safety cabinet has one and we use it all the time to keep it sterile and sometimes for some of our dishes and tools prior to playing with our BSL-2 microbes. However, if used incorrectly, you can easily kill off the weaker microbes while allowing the more resilient ones to mutate and make unwanted results. Love your channel, watch it all the time!
I worked at a company that made biological products in the B2B space. The retards in the RG department left their product under the hood and someone thought they could turn the UV on with the product inside, which has DNA. Well not anymore. What does this have in common with my cat waking me up last night? A single point of failure. Imagine any action, no matter how ridiculous, will happen once. My cat learned how to operate a door knob. An employee went and nuked hundreds of finished products. Don't not do drugs kids.
I modified an old microwave oven by removing the magnetron, transformer and fan and installing a UV bulb. This gave me an enclosed turntable with timer for sanitizing masks or other small items. Thought this might be handy for some of your experiments. I did this back in March when masks were hard to get.
Hey, you seem to know what you're doing. Can you please tell me if UVC lamps can burn objects at close distance? For example, i want to use the germicidal lamp in my bedroom but i don't know how far the objects must be. The bed made from fabric, the monitor screen from the computer, the mirror on the closet.. Will the UVC cause any problems for those objects?
that's a really good idea, well done. i never would have thought of it but it makes sense you can still use the control board even with the transformer unplugged because it mainly uses temperature sensors to shut down in case something goes wrong, so it's not really sensing what the load is, per se
My sister worked for an apartment management company. They liked to send her on move out inspections, since she has a rapid onset severe hay fever reaction to cannabis, and so they always knew someone had been smoking it (which was against their rental agreement, since it is still against federal law) if she came out with swollen, red, watery eyes and an itchy, runny nose, especially since she doesn't react like that to anything else. They would then need to run an ozone generator in the apartment before the next tenant could move in, and charged their previous tenant the associated fees for the clean up. My sister never had any further allergic reactions after they treated the space with ozone.
Sounds like an awful apartment management company, otherwise known as slumlords. You cannot make a decision if someone at somepoint smoked herb in the apartment based on sending someone with allergies in like a canary. That would never hold up in court and your company was probably taking advantage of less fortunate citizens who couldnt fight back.
@@savagesarethebest7251 That's actually a false notion. Sometimes people are just allergic to things and will react, sometimes severely, to their very first exposure. That's why doctors want people to be so careful when introducing new foods to infants.
Also, my mother is severely allergic to it and has the same reaction. I am also allergic to it, though not as severely. It does give me massive sinus headaches, but my hay fever is way worse with wild grasses than with marijuana.
@@familywilliams4058no that’s a complete lie. You have to be exposed to the allergen first for it to be an allergy. There are other autoimmune diseases and syndromes that are different, but an “allergy” scientifically must be IgE coordinated and requires sensitization to the allergen. You are correct that someone may seemingly feel like they had an allergic reaction out of nowhere, as the first exposure didn’t cause allergy. It’s insanely rare for someone to have allergies to something without pretty heavy exposure such as in this case smoking cannabis almost certainly happened, especially because the original comment clearly stated she doesn’t have an allergy to anything else like that which excludes any chance that it could have been an allergy to something else that happens to cause a reaction to other stuff (such as food pollen allergy syndrome). That’s possible to be sensitized to say oak tree and then become allergic to raw vegetables and fruits without ever touching them. But they very clearly stated she ONLY gets it to cannabis, which means she must have consumed it or got it into her blood stream or inhaled it. For someone personally, anaphylaxis or severe allergies can become extremely severe very fast, sometimes the first exposure after sensitization will kill you. Sometimes your mouth just tingles a bit for a couple years then one day your lungs shut down and you start dying very quickly. Trust me, it’s not ever worth risking even if it’s just hay fever or whatever. Because all it takes is you to swallow enough or inhale enough and boom you are dead. Each reaction, unless controlled and minimal, is a step towards being more sensitive and getting the deadly reaction. Her manager is a fucking idiot and so is she. That’s basically abuse, and he should go to jail for forcing her to risk that. Unless she was getting paid a lot over 100k a year for a very specific job that outlines the duties and has an action control plan, then she is a fucking idiot. I’m not sure why the original comment posted that like she was super cool, and especially made it seem like marijuana was bad. His sister literally smoked Marijuana or consumed it before to get her allergy, and she got used and is lucky to be alive. Sometimes things like that are cool but that’s just fucking lame and she’s a loser for that. If she was getting paid for it to do some special governmental or military need, or some sort of science/health benefit like detecting presence of allergens in food, then it would be a different story.
I've seen tons of videos about it by bigger and more professional channels yet this is by far the best in giving the informations and results needed.. props man!
Hey Riley, how are you? I hope you are good. do you understand why it is obtained a result of 17min for the 2.5ft distance germ sample? I mean, that result is obtained in function of the 5min/8inch experiment, right? I am a little confused and could use a little help to interpret those results.
10 months ago I started with UVC. Now I use 100 to 300 watts in a room. The lamps prices are dirt cheap now. It is so much better to disinfect with a few hundred watts, the process is more thorough.
Cool video. Couple things: The shadows cast from the rack from which your CFL was suspended almost certainly threw off your readings. Ozone vs. UVC isn't a black and white comparison, it depends on factors such as the UVC source and the output of the ozone generator.
The standard time is 5-15 minutes and then ventilate the room because Ozone is dangerous. So we need to figure out the distance that is required to get sterilization between 5minutes and 15 minutes.
I think only safe UVC light for skin eyes and no ozone is FAR UVC light Very expensive . When tested uvc light in a bedroom closed door with remote plug in on timer for 1 hour . I aired room out a few hours because smelled strong ozone smell . I was using 2 F30T8 UVC Fluorescent tubes in a shop light fixture to kill dust mites . Don’t know if it worked but just a experiment . The UVC light will burn skin similar to sunburn in a few seconds with large light as I was using .
UV-C lamps which are intense enough are 1) efficiently in killing germs by molecular breakdown/inactivation PLUS 2) will also have all germs on either surfaces otherwise chemically oxidised - means destructed their cell membranes - in a room after some time. Ozone is an aggressive gas of course. Because these lamps create also amounts of Ozone when lit in atmosphere. That is what you can smell if such a lightbulb is on.
That UVC light also generates ozone! Others generate even more, others none. It depends on the spectrum nm. I have that same light and it has a small spike in 185nm that generates enough ozone that I need to ventilate the area after use because of the strong smell. So it's a double action in comparison to just ozone, especially if you have a big bulb with high wattage.
The light in the video does not generate any Ozone. It makes absolutely no smell. The link in the description is for one that generates ozone because the one that I used is no longer available.
@@Dr_Lucozade It depends on airflow. If there is enough of it, it dissipates in a couple of minutes. If you only open a window, even if there is high airflow outside, it will take a while until you stop sensing it. If your option is only a window then use a fan and make sure you use it with thermodynamics in mind: If the temperature in the room is higher than outside, then the hot air of the room will go toward outside only through the upper-half part of the window (the lower half is where the cold air will get into the room), so place the fan to blow out of the windows through the upper side. And vise-versa if the temperature of the room is lower than out. This way the replacement of the atmosphere of your room will happen way faster.
My concern with UVC sterilising plant tissue cultures I want to grow in polypropylene tubs is that UVC can “usually” only penetrate the top surface of whatever media it hits, it can’t pass through Plastic or glass and it struggles to pass through almost anything including water and medias etc so I wonder if a UVC bulb would be more effective if it was submerged in the medium while it was being mixed somehow so the media passes close by the light as it mixes and hits the light more often, the same principal used in aquarium UVC filters to kill bacteria and algae blooms 🤔
I grow mushrooms at home, and use a rather strong UVC light to shine on the plates right after pouring, so they can solidify without the lid on. This way I stop condensation forming on the lids. :)
several comments on this video: it is not known if this is actually UVc or farUVc or even what the actual dosing is being delivered as no measurements were given from the light source. I am not sure if it was the video aperations or something, but the bulb was making light on the video which UVC of any wavelength is completely invisible to human vision. The samples used to treatment with the hands patted on the sample plates should have been shown with violet light so the contamination would be visible as bacteria and mico-biologics autoflouresce and can redibly be seen to give a clear indication of presence or not... Who knows if any contaminance moved from hand to plate in other words.. I say this because of the pattern of hand patting clearly followed the growth areas swabbed in the video so none of the testing is in any way validated. It is incredibly important to know which UVc waveform was used as well as the actual dosing. Even if it was plain UVc (234mm), dosing from a 30watt bulb (what it seems you were using), would be 10 minutes minimum for the distance you were using it. FarUVc (222mm) is even weaker in dosing. Another interesting fact in UVc use is that the distance is not that important since the wavelength of true UVc is so linear, given the distance is less than around 30'. This also makes the issue with the shadow so important, yet insane in that you cannot see the shadow since the wavelength of UVc is invisible to perceive. This is why I question if you were actually delivering any UVc of any wavelength due to the lamp actually shining visibly in the video.. In real life, the bulbs for UV make no visible light (was this a video apearition of your camera or was it shining light that you saw?). I am not sure you know enough about light wavelengths from the comments through you video.. I know this probably sounds like a complete teardown of the video, but one really needs to know how light (UVc light in this particular instance) works so incorrect information is not handed out as truth. The final issue (not even related to the subject of light) is the final frames recommend soaking masks in alcohol to sterilize masks... Alcohol is not a sterilizant, but in fact a cleanser to break down protiens.. Hydrogen peroxide is the correct choice for things like masks or anything for that matter.. H2O2 is an actual sterilizant that is non-toxic to people.Bacteria live in alcohol (reason why beer and wine is fermented as an example). Ozone which is an ionized oxygen molecule has to be contained as it will literally fall apart in an open environment so its efficacy is somewhat limited unless massive amounts are literally poured into the environment.. this is why real ozone sterilizers are sealed boxes for small items.. the benefit is that the ozone can flow into all areas in its container so shadows are irrelevent. I will not start on Ozone generation as this is another process often scammed and criticized by climate alarmists since in the 1970s scare over a hole in the ozone layer of atmosphere (hoax) as this is a completely different form of ozone and can be found being emited from any laser printer (interesting side note). Sorry if this seems derogatory, but tuthful info is needed for testing like this was supposed to be The items which should have been used: ================================= UVc light meter (Wavelength of dosing) Radiance meter to measure light delivery (Magnitude) Violet light (Blacklight) to observe surface infactants. Negative air source through air filter to remove cross-contamination
Thats a low pressure mercury lamp. Basically a CFL without the fluorescent powder and made of quartz glass. I have a few of those and I can smell ozone so they are legit. LP mercury lamps arent LEDs so they are inefficient, having several emiting spectral lines Check the mercury's emision line spectrum: 184.5nm (/), 253.7nm (/), 365nm, 404.7nm (+), 435.8nm, 546.1nm (+), 578nm. (+) = strong spectral lines giving that greenish-blue color. (/) = only present at very low pressures.
Thanks so much for your channel. It’s very helpful. Can you create a comparison between normal ozone machines and UVC ozone machines? Enerzen markets UVC ozone machines as the ones that can actually kill bacteria, while their 0-555/0-777 line doesn’t kill bacteria because it doesn’t have that UVC bulb. It would be interesting getting a comparison between these
Great video! I’m wondering what is the best way to disinfect furniture with fabric like a bed. I was thinking a steam cleaner but am concerned about damaging the wood behind the fabric.
What are your thoughts on those inline uvc water sterilizers that attach to RO water purifiers? The exposure time sounds too short to work as advertised.
Such a very well made video with proper testing and detailed information. Do you think those UVC lamps with ozone are good, and do they produce enough ozone to be effective? The UVC lamp i have is 65w and i use it for 30-60 minutes, it takes many hours for the ozone smell to disappear even with an open window. Is this a good indication there's enough ozone to sanitize every nook and cranny? And also, does the ozone really damage electronics and wires? Sometimes i turn on the AC unit while there's ozone to sanitize the AC as well, hopefully that's alright.
The contaminations you collected could be coming from the air since you're not working in a sterile area. Therefore, how long it took you to collect the spores could be the bigger factor for how much contamination you got than how effective the sterilization was.
No. I ran controls multiple times leaving Petrie dishes in open air for the same time that I collected bacteria and transferred directly to the other petri dishes. I never once had any growth on a petri dish unless it was touched with some thing. This is shown In the other videos in the series.
I have a 60W UVc light. When I have it turned on for one hour in the room, it creates an sulfur like odor. Is that odor an indication of the presence of ozone. I know the UVc can kills viruses. But does the Ozone also kill viruses. Should I keep my windows closed so that the ozone can kill the viruses effectively?
The ozone also kills viruses. But ozone is not a sulphur smell. When uvc reacts with materials or skin it can create those kinds of odors. That’s one way to know it’s working.
Just bought an exceptionally well-maintained, used RV. Want to sterilize the tap, drinking water coming from fresh water tank. I believe your experiment confirms that running the water directly through a UVC light source is bogus, agreed? Suggestions? What about ozone? Trying to avoid using a typical filter
IF you want flowing sterilized water then a UVC filter is the way to go. If you just want to sterilize the system to clean it, then just use strait bleach and pump it through. Then flush it a few times. Typically you add a small amount of bleach to your water tank in an RV anyway. I don't know the ratio off-hand.
I noticed during the segment of the tests that involve using the rack to suspend the bulb, there was some shadows cast by the rungs underneath the bulb. I wonder if that had any effect. Anyway, excellent video!
Thank you very much for the video! An incredible job is done by you. Unfortunately, there are very few such videos on UA-cam. Good luck with your further projects.
I'll check your channel but may I ask: Have you tried ozone in the water to see how that works as a plant disinfectant? How harsh is ozone, gas or in water, on leaves?
It does work in water, but my assumption is that it will cause harm to the plant. Microbes in solution and on roots are both harmful and beneficial. No way to target just the harmful ones.
I read in the comment section of another video that the most efficient lighting for an indoor Superpickle grow is to use gu10 style bulbs with a 40 degree beam angle. They said the focal lens helps big time. This sound plausible to you?
@@GrowingAnswers just to be clear we're talking about a diy array of several bulbs. The numbers he threw out were 50,000 lux over a 3x4 area at 100w. The bulbs have posts that stick straight out the back that look easy to solder to. I don't even know how those numbers compare to the marshydro lights I'm just starting to research this stuff.
Hey quick question. The UVC passover made at 3:55 is at a much lower height, and thus much higher intensity than the light kept for 1 min at 8 inches. I read that at increased heights, the intensity can drop by over 90%. Could this answer why the quick passover at short height did just as well as at height for 1 min?
Think of it like fire. If you passed your hand over a hot bed of coals at 1 inch and did it so that your hand was exposed to the heat for five seconds, do you think it would hurt? Or you could hold your hand at 3 feet from the coals for 30 minutes. What do you think would do more damage?
Germicidal UVC lamps like the one used in this video will damage organic material. It works by breaking down the DNA of the organism so I wouldn't use it on anything living, plants included.
There are also 185 nm UVD lamps that produce ozone as a by-product, dunno if it's better than only using UVC light / ozone? Also I think UV/ozone would cause plastics/fabrics to deteriorate faster?
Would it not purify the air at all To set it up on ceiling like you did? I was considering putting uvc on top of cabinet (no direct light except for air) Would this be safe to leave on and would it help purify air?
If you put a UV light inside of something that moves air such as a tube with a fan blowing air through it then yes it would sanitize the air. But if the air is moving too fast past the light it would be less effective. You would also want the tube to be only about an inch or two larger than the light to keep the air in closer proximity to the light.
UVC light, more the better. I started with a 6 watt, then a 22 watt, then running dual lamps. Next is 3 or 4 lamps. Ozone is produced really fast. A 15 or 30 minute exposure goes by really fast. I hope to run 4 lamps or 88 watts on a tripod.
Hope you can answer this. I had a pollen outbreak in my 4'x2'x5'ft high grow tent. I bought a similar light to yours (8w) to try and kill all the pollen. The light is hanging at about 4 feet high. I set the timer for 60 minutes. I'm going to do this a few times but I'm curious what you would do? Is what I'm doing going to be enough. My grow lights and fans etc. were covered in pollen. Nice video btw.
UVA and UVB for growing. UVC will kill vegetation. Mars hydro sp3000 has UVA and IR lighting. Pretty awesome light with full spectrum for large dense flower.
@@johnnypoe3965 Bro the last thing you should be stingy & cheap with when you grow is the light. Your grow stands and falls with the light, trust me you won’t get proper results with a cheap Noname China light from alibaba. If you don’t want to buy to expensive led lights buy some from mars hydro, but don’t waste your money on alibaba lights, trust me if you do so u will regret it
This is all interesting BUT not being a student of microbiology how does this all work out with different power levels of lights? You're using a 6 watt light so what happens with a 38 watt light - a 55 watt light - a 100 watt light?
1st of all, Superpickle. Thanks for making these vids. Would you like some of my powdery mildew to test efficacy of ozone and UVC? lol I'm trying UVC to help keep it in check.
Dear Growing Answers I love this lesson and used your link, but your unit is not available. I want a unit that I can use to disinfect computer keyboards that gross me out. The units still available produce Ozone... Amazon U/V/C Light Lamp 185nm with 253.7nm Bulb 5ft Cord and Plug 110V (6W Ozone Lamp) Do I have to worry about using this lamp because of the ozone, for just a couple of minutes? A couple of passes once a day is all I really need. Thanks so very much! Signed The Lysol Cootie Killer with dishpan hands
Thank you for letting me know. I added a link for the same light that is currently available but it produces ozone. I imagine the amount of ozone it produces isn’t that much unless it was contained in a box. You will probably notice it when you use it but I don’t believe it will be enough to cause any worry. If you notice the odor and it doesn’t irritate your nose or become unbearable as an odor, then it probably isn’t going to cause any harm and certainly not for the short time that you would use it. Something small like that isn’t going to produce a large quantity of ozone and the ozone amount it produces only works most effectively over a long period of time and only in smaller enclosed spaces. I probably would have used it myself too, but for this experiment it was important that I didn’t influence it with Ozone. That’s why I did not get the Ozone version
@@GrowingAnswersThanks so much for getting back to me. I appreciate it. Well, this is a relief. I know the unit is small, but then there is danger in most everything. Best to know the tools we work with. Can you tell me how long can I safely run the unit? I saw one video that said this small size is good for a 10 x 10 room. Again, thanks so much
@@momzilla9491 The amount of ozone it puts off would likely be ok for a 10x10 if it ran continuously and the room had no ventilation at all. So it’s not practical for ozone use since you don’t want to be breathing ozone constantly. If you have hvac or an open door to a 10x10 room then the ozone it puts out will be basically useless. Maybe for a small amount of odor control only. As far as the UV light….no. It won’t do much of anything in a 10x10. It needs to be within 3ft of the surface you wish to decontaminate over a time period. Or within an inch if you want to sterilize instantly.
@@GrowingAnswers Ok, so rooms 10 x 10 that I can close off, and turn off any ventilation - as far as ozone goes. This will be great for bathrooms, lockers then along with my computers! Thanks again! This is good news. Now something for your tool chest!... I've been making Colloidal Silver for about 10 years. It will work on mold etc if you spray directly and isn't harmful for plants, or people who are not allergic to silver, even internally. My son's friend was raped at the beginning of this pandemic and contracted HIV. It knocked the virus down in no time to almost zero. Spoke to my urologist about it and he has patients using it successfully for bladder infections instead of, or with antibiotics. It's not hard to make your own, and this stuff can stay in a plastic spray bottle for years and never smells of anything other than fresh water. Storage is different for medicinal purpose and can't be ignored. Happy New Year!
@@momzilla9491 I’m aware of it. Also, if you want ozone, using a uv lamp of that size is not an effective or efficient way to do it. Just get an ozone generator for ozone. Or a much larger uv lamp that emits ozone. Either way you shouldn’t use it while being in an area.
Great demonstration, thank you. I picked up a few UV mercury lamps over 20 years ago. They were part of a homemade EPROM erasing device. Each lamp came with a ballast and a quartz tube cover. I'm not sure what band mine are radiating in but it looks greenish blue like yours. The only difference is mine produce noticeable ozone with only a few seconds of operation. You are saying your lamps don't produce the ozone smell?
@@GrowingAnswers but but... UV-C will always cause ozone.. it breaks down and is rearranging molecules and some of them turns to O3 aka ozone Edit: apparently you can tune the wavelength so that no ozone is being produced
General random question does a Aquarium uvc light submersible 11.6 x 3.7 x 1.7 inches penetrate plastic at a Distance 2 feet? Will it harm being around it ?
it only takes a short time. depends on distance though. I guess if it were 10ft away then 24 hours would likely be enough. with this size light anyway.
Hi, im just curious cause im planning to make a purifier with uv installed, can reflected UVlight from the bulb itself still works? like putting mirror and deflect it to some parts
Well there are two problems with that. One, is reflecting light is added distance from the source which reduces how effective it is. Two, is if there is any coating, plastic or glass over the reflective source then it filters out the UVC. Many materials absorb it. Any mirror is going to filter the reflected light because it’s glass. Unless maybe it’s a first surface mirror, but I’m not sure.
May I ask u to make...an experiment with (for example) red basil in white light and in red/blue light? I think it would be interesting...to know if pigments change their way to grow
That’s actually a decent idea. I have researched red leaf plants actually. It will be on my list at some point. I don’t have any RB lights anymore though. Kind of phased out now.
It comes down to light intensity (watts and proximity) and time. Double the distance from the initial test and you reduce the intensity by a factor of 4 and the time scales in linear with that.
@@eliomarconde3146 honestly I don’t use complex equations like that. But that seems about right. You can find inverse square law equations online that would be suitable for that. With uvc being such high energy photons, an equation won’t necessarily translate to real world use in ever instance.
@@GrowingAnswers i am trying to do the calculation wtih the inverse square law that you told me. But I don't get the same result. Could give an example of what expression/values did you use?
Just use a UVC light that has no filter. It's going to produce a lot of ozone as a byproduct. Best of both worlds with the ozone being produced everywhere the light gets to as a bonus.
As a microbiology graduate student, I can personally attest to the effectiveness of UV lights. Our Superpickle bio safety cabinet has one and we use it all the time to keep it sterile and sometimes for some of our dishes and tools prior to playing with our BSL-2 microbes. However, if used incorrectly, you can easily kill off the weaker microbes while allowing the more resilient ones to mutate and make unwanted results. Love your channel, watch it all the time!
Can it be used for sanitizing cosmetic packaging and supplies
When you refer to "Used incorrectly", what did you meant?
What would be the incorrect way to use it?
@@nataliebean4416 probably time exposure or set ups b4 the uv exposure/ turn on
I worked at a company that made biological products in the B2B space. The retards in the RG department left their product under the hood and someone thought they could turn the UV on with the product inside, which has DNA. Well not anymore.
What does this have in common with my cat waking me up last night? A single point of failure. Imagine any action, no matter how ridiculous, will happen once. My cat learned how to operate a door knob. An employee went and nuked hundreds of finished products.
Don't not do drugs kids.
I modified an old microwave oven by removing the magnetron, transformer and fan and installing a UV bulb. This gave me an enclosed turntable with timer for sanitizing masks or other small items. Thought this might be handy for some of your experiments. I did this back in March when masks were hard to get.
Hey, you seem to know what you're doing. Can you please tell me if UVC lamps can burn objects at close distance? For example, i want to use the germicidal lamp in my bedroom but i don't know how far the objects must be. The bed made from fabric, the monitor screen from the computer, the mirror on the closet.. Will the UVC cause any problems for those objects?
Just want to add that nobody who doesn't know exactly what they're doing shouldn't even attempt this, microwaves are dangerous devices to mess with.
I have something similar.. I call it sunlight. Patent pending.
@@twentytwo138 quartz glass passes uv .. polished aluminum reflects it. Don't touch a potentially hot bulb to a surface.. other than that, go crazy.
that's a really good idea, well done. i never would have thought of it but it makes sense you can still use the control board even with the transformer unplugged because it mainly uses temperature sensors to shut down in case something goes wrong, so it's not really sensing what the load is, per se
My sister worked for an apartment management company. They liked to send her on move out inspections, since she has a rapid onset severe hay fever reaction to cannabis, and so they always knew someone had been smoking it (which was against their rental agreement, since it is still against federal law) if she came out with swollen, red, watery eyes and an itchy, runny nose, especially since she doesn't react like that to anything else. They would then need to run an ozone generator in the apartment before the next tenant could move in, and charged their previous tenant the associated fees for the clean up. My sister never had any further allergic reactions after they treated the space with ozone.
Sounds like an awful apartment management company, otherwise known as slumlords. You cannot make a decision if someone at somepoint smoked herb in the apartment based on sending someone with allergies in like a canary. That would never hold up in court and your company was probably taking advantage of less fortunate citizens who couldnt fight back.
I just wonder how she got that reaction from the beginning? 🤔 Like no human reacts to Urshiol the first time.
@@savagesarethebest7251 That's actually a false notion. Sometimes people are just allergic to things and will react, sometimes severely, to their very first exposure. That's why doctors want people to be so careful when introducing new foods to infants.
Also, my mother is severely allergic to it and has the same reaction. I am also allergic to it, though not as severely. It does give me massive sinus headaches, but my hay fever is way worse with wild grasses than with marijuana.
@@familywilliams4058no that’s a complete lie. You have to be exposed to the allergen first for it to be an allergy. There are other autoimmune diseases and syndromes that are different, but an “allergy” scientifically must be IgE coordinated and requires sensitization to the allergen. You are correct that someone may seemingly feel like they had an allergic reaction out of nowhere, as the first exposure didn’t cause allergy. It’s insanely rare for someone to have allergies to something without pretty heavy exposure such as in this case smoking cannabis almost certainly happened, especially because the original comment clearly stated she doesn’t have an allergy to anything else like that which excludes any chance that it could have been an allergy to something else that happens to cause a reaction to other stuff (such as food pollen allergy syndrome). That’s possible to be sensitized to say oak tree and then become allergic to raw vegetables and fruits without ever touching them. But they very clearly stated she ONLY gets it to cannabis, which means she must have consumed it or got it into her blood stream or inhaled it.
For someone personally, anaphylaxis or severe allergies can become extremely severe very fast, sometimes the first exposure after sensitization will kill you. Sometimes your mouth just tingles a bit for a couple years then one day your lungs shut down and you start dying very quickly. Trust me, it’s not ever worth risking even if it’s just hay fever or whatever. Because all it takes is you to swallow enough or inhale enough and boom you are dead. Each reaction, unless controlled and minimal, is a step towards being more sensitive and getting the deadly reaction. Her manager is a fucking idiot and so is she. That’s basically abuse, and he should go to jail for forcing her to risk that. Unless she was getting paid a lot over 100k a year for a very specific job that outlines the duties and has an action control plan, then she is a fucking idiot. I’m not sure why the original comment posted that like she was super cool, and especially made it seem like marijuana was bad. His sister literally smoked Marijuana or consumed it before to get her allergy, and she got used and is lucky to be alive. Sometimes things like that are cool but that’s just fucking lame and she’s a loser for that. If she was getting paid for it to do some special governmental or military need, or some sort of science/health benefit like detecting presence of allergens in food, then it would be a different story.
I've seen tons of videos about it by bigger and more professional channels yet this is by far the best in giving the informations and results needed.. props man!
Always nice when results support expectations. Refreshing like a fresh, crisp Superpickle
Hey Riley, how are you? I hope you are good. do you understand why it is obtained a result of 17min for the 2.5ft distance germ sample?
I mean, that result is obtained in function of the 5min/8inch experiment, right? I am a little confused and could use a little help to interpret those results.
10 months ago I started with UVC. Now I use 100 to 300 watts in a room. The lamps prices are dirt cheap now. It is so much better to disinfect with a few hundred watts, the process is more thorough.
Cool video.
Couple things:
The shadows cast from the rack from which your CFL was suspended almost certainly threw off your readings.
Ozone vs. UVC isn't a black and white comparison, it depends on factors such as the UVC source and the output of the ozone generator.
The standard time is 5-15 minutes and then ventilate the room because Ozone is dangerous.
So we need to figure out the distance that is required to get sterilization between 5minutes and 15 minutes.
I think only safe UVC light for skin eyes and no ozone is FAR UVC light Very expensive . When tested uvc light in a bedroom closed door with remote plug in on timer for 1 hour . I aired room out a few hours because smelled strong ozone smell .
I was using 2 F30T8 UVC Fluorescent tubes in a shop light fixture to kill dust mites . Don’t
know if it worked but just a experiment . The UVC light will burn skin similar to sunburn in a few seconds with large light as I was using .
UV-C lamps which are intense enough are 1) efficiently in killing germs by molecular breakdown/inactivation PLUS 2) will also have all germs on either surfaces otherwise chemically oxidised - means destructed their cell membranes - in a room after some time. Ozone is an aggressive gas of course. Because these lamps create also amounts of Ozone when lit in atmosphere. That is what you can smell if such a lightbulb is on.
That UVC light also generates ozone! Others generate even more, others none. It depends on the spectrum nm. I have that same light and it has a small spike in 185nm that generates enough ozone that I need to ventilate the area after use because of the strong smell. So it's a double action in comparison to just ozone, especially if you have a big bulb with high wattage.
The light in the video does not generate any Ozone. It makes absolutely no smell. The link in the description is for one that generates ozone because the one that I used is no longer available.
Yeah you can buy them with or witout ozone
How long do you have to wait for ozone to dissipate? Is opening the windows enough?
@@Dr_Lucozade It depends on airflow. If there is enough of it, it dissipates in a couple of minutes. If you only open a window, even if there is high airflow outside, it will take a while until you stop sensing it. If your option is only a window then use a fan and make sure you use it with thermodynamics in mind: If the temperature in the room is higher than outside, then the hot air of the room will go toward outside only through the upper-half part of the window (the lower half is where the cold air will get into the room), so place the fan to blow out of the windows through the upper side. And vise-versa if the temperature of the room is lower than out. This way the replacement of the atmosphere of your room will happen way faster.
Actually this just never came to my mind. Now it's going crazy planning an automated disinfection of basically any stuff. Like it's on superpickle.
Awesome video! Is regular sun glass effective to protect eyes? Does UVC work for fungus also? Is UVC safe on skin?
Youve got me putting mine on in my room for over 2 hours each time now.. Thanks
Why two hours? Most of the recommendations is 20 mins..should I up the time?
My concern with UVC sterilising plant tissue cultures I want to grow in polypropylene tubs is that UVC can “usually” only penetrate the top surface of whatever media it hits, it can’t pass through Plastic or glass and it struggles to pass through almost anything including water and medias etc so I wonder if a UVC bulb would be more effective if it was submerged in the medium while it was being mixed somehow so the media passes close by the light as it mixes and hits the light more often, the same principal used in aquarium UVC filters to kill bacteria and algae blooms 🤔
My mom’s lab at her college she teaches at, has one for the room. I just received mine on Amazon for $100.
I grow mushrooms at home, and use a rather strong UVC light to shine on the plates right after pouring, so they can solidify without the lid on. This way I stop condensation forming on the lids. :)
I came across some mushroom spore prints (superpickle strain). I wondered if I ran this uv-c light over the print, would it kill or mutate the spores?
Thanks for the demo. is very useful for me because I am using to sanitize my homebrewing equipment. Thanks a million times
several comments on this video:
it is not known if this is actually UVc or farUVc or even what the actual dosing is being delivered as no measurements were given from the light source. I am not sure if it was the video aperations or something, but the bulb was making light on the video which UVC of any wavelength is completely invisible to human vision. The samples used to treatment with the hands patted on the sample plates should have been shown with violet light so the contamination would be visible as bacteria and mico-biologics autoflouresce and can redibly be seen to give a clear indication of presence or not... Who knows if any contaminance moved from hand to plate in other words.. I say this because of the pattern of hand patting clearly followed the growth areas swabbed in the video so none of the testing is in any way validated.
It is incredibly important to know which UVc waveform was used as well as the actual dosing. Even if it was plain UVc (234mm), dosing from a 30watt bulb (what it seems you were using), would be 10 minutes minimum for the distance you were using it. FarUVc (222mm) is even weaker in dosing. Another interesting fact in UVc use is that the distance is not that important since the wavelength of true UVc is so linear, given the distance is less than around 30'. This also makes the issue with the shadow so important, yet insane in that you cannot see the shadow since the wavelength of UVc is invisible to perceive. This is why I question if you were actually delivering any UVc of any wavelength due to the lamp actually shining visibly in the video.. In real life, the bulbs for UV make no visible light (was this a video apearition of your camera or was it shining light that you saw?).
I am not sure you know enough about light wavelengths from the comments through you video.. I know this probably sounds like a complete teardown of the video, but one really needs to know how light (UVc light in this particular instance) works so incorrect information is not handed out as truth.
The final issue (not even related to the subject of light) is the final frames recommend soaking masks in alcohol to sterilize masks... Alcohol is not a sterilizant, but in fact a cleanser to break down protiens.. Hydrogen peroxide is the correct choice for things like masks or anything for that matter.. H2O2 is an actual sterilizant that is non-toxic to people.Bacteria live in alcohol (reason why beer and wine is fermented as an example).
Ozone which is an ionized oxygen molecule has to be contained as it will literally fall apart in an open environment so its efficacy is somewhat limited unless massive amounts are literally poured into the environment.. this is why real ozone sterilizers are sealed boxes for small items.. the benefit is that the ozone can flow into all areas in its container so shadows are irrelevent. I will not start on Ozone generation as this is another process often scammed and criticized by climate alarmists since in the 1970s scare over a hole in the ozone layer of atmosphere (hoax) as this is a completely different form of ozone and can be found being emited from any laser printer (interesting side note).
Sorry if this seems derogatory, but tuthful info is needed for testing like this was supposed to be
The items which should have been used:
=================================
UVc light meter (Wavelength of dosing)
Radiance meter to measure light delivery (Magnitude)
Violet light (Blacklight) to observe surface infactants.
Negative air source through air filter to remove cross-contamination
Thats a low pressure mercury lamp. Basically a CFL without the fluorescent powder and made of quartz glass. I have a few of those and I can smell ozone so they are legit. LP mercury lamps arent LEDs so they are inefficient, having several emiting spectral lines Check the mercury's emision line spectrum:
184.5nm (/), 253.7nm (/), 365nm, 404.7nm (+), 435.8nm, 546.1nm (+), 578nm.
(+) = strong spectral lines giving that greenish-blue color.
(/) = only present at very low pressures.
Thanks so much for your channel. It’s very helpful. Can you create a comparison between normal ozone machines and UVC ozone machines? Enerzen markets UVC ozone machines as the ones that can actually kill bacteria, while their 0-555/0-777 line doesn’t kill bacteria because it doesn’t have that UVC bulb. It would be interesting getting a comparison between these
Ozone will definitely kill bacteria. But UV does it a lot faster.
Nice systematic breakdown of the effect of distance on uv -c would be good to have the formula
Great video! I’m wondering what is the best way to disinfect furniture with fabric like a bed. I was thinking a steam cleaner but am concerned about damaging the wood behind the fabric.
What are your thoughts on those inline uvc water sterilizers that attach to RO water purifiers? The exposure time sounds too short to work as advertised.
@@Mind69420 they work but you need to match the wattage to the flow rate. Also not really needed if the water is chlorinated
Such a very well made video with proper testing and detailed information. Do you think those UVC lamps with ozone are good, and do they produce enough ozone to be effective? The UVC lamp i have is 65w and i use it for 30-60 minutes, it takes many hours for the ozone smell to disappear even with an open window. Is this a good indication there's enough ozone to sanitize every nook and cranny? And also, does the ozone really damage electronics and wires? Sometimes i turn on the AC unit while there's ozone to sanitize the AC as well, hopefully that's alright.
The ozone is probably enough to kill most micro organisms, but probably not enough to work on established mold, mildew, or fungus.
The contaminations you collected could be coming from the air since you're not working in a sterile area. Therefore, how long it took you to collect the spores could be the bigger factor for how much contamination you got than how effective the sterilization was.
No. I ran controls multiple times leaving Petrie dishes in open air for the same time that I collected bacteria and transferred directly to the other petri dishes. I never once had any growth on a petri dish unless it was touched with some thing. This is shown In the other videos in the series.
I have a 60W UVc light. When I have it turned on for one hour in the room, it creates an sulfur like odor. Is that odor an indication of the presence of ozone. I know the UVc can kills viruses. But does the Ozone also kill viruses. Should I keep my windows closed so that the ozone can kill the viruses effectively?
The ozone also kills viruses. But ozone is not a sulphur smell. When uvc reacts with materials or skin it can create those kinds of odors. That’s one way to know it’s working.
I didn't see this video in my subs, so it's a good thing I remembered about the Superpickle
Oooo! almost forgot about the superpickle - so glad I found my note, I was engrossed in the video.
Just bought an exceptionally well-maintained, used RV. Want to sterilize the tap, drinking water coming from fresh water tank. I believe your experiment confirms that running the water directly through a UVC light source is bogus, agreed? Suggestions? What about ozone? Trying to avoid using a typical filter
IF you want flowing sterilized water then a UVC filter is the way to go. If you just want to sterilize the system to clean it, then just use strait bleach and pump it through. Then flush it a few times. Typically you add a small amount of bleach to your water tank in an RV anyway. I don't know the ratio off-hand.
Can't wait to grow some Superpickle this year! Thank you for all the insight!
I noticed during the segment of the tests that involve using the rack to suspend the bulb, there was some shadows cast by the rungs underneath the bulb. I wonder if that had any effect.
Anyway, excellent video!
What UV wavelength bulb where you using
Thank you very much for the video! An incredible job is done by you. Unfortunately, there are very few such videos on UA-cam. Good luck with your further projects.
What is the watt of the UV light you used on this experiment?
6
I'll check your channel but may I ask:
Have you tried ozone in the water to see how that works as a plant disinfectant?
How harsh is ozone, gas or in water, on leaves?
It does work in water, but my assumption is that it will cause harm to the plant. Microbes in solution and on roots are both harmful and beneficial. No way to target just the harmful ones.
I read in the comment section of another video that the most efficient lighting for an indoor Superpickle grow is to use gu10 style bulbs with a 40 degree beam angle. They said the focal lens helps big time. This sound plausible to you?
40 degrees? That’s a really tight hotspot. That’s more of a specific use/situation. Might get light burn too.
@@GrowingAnswers just to be clear we're talking about a diy array of several bulbs. The numbers he threw out were 50,000 lux over a 3x4 area at 100w. The bulbs have posts that stick straight out the back that look easy to solder to. I don't even know how those numbers compare to the marshydro lights I'm just starting to research this stuff.
Ok we are SuperPickle day January 3rd 2021.It would be perfect for my place.Thank you for the generosity!!!:o)
Why is everybody mentioning that Superpickle? Who's that? 🤣🤣🤣
same from here hahaha.
Fun info...🎉 can't wait to see more of your content!
Cheers!
My favorite action hero of all time...Superpickle
What about UVC Lamps that produce slight amounts of ozone?
I’d be curious to see this experiment using UVB instead of UVC
Hey quick question. The UVC passover made at 3:55 is at a much lower height, and thus much higher intensity than the light kept for 1 min at 8 inches. I read that at increased heights, the intensity can drop by over 90%. Could this answer why the quick passover at short height did just as well as at height for 1 min?
Think of it like fire. If you passed your hand over a hot bed of coals at 1 inch and did it so that your hand was exposed to the heat for five seconds, do you think it would hurt? Or you could hold your hand at 3 feet from the coals for 30 minutes. What do you think would do more damage?
Is UVC light bad for organic material? Because i need to find a way to disinfect the SUPERPICKLES I grow indoors at the moment.
Btw love the video!
Germicidal UVC lamps like the one used in this video will damage organic material. It works by breaking down the DNA of the organism so I wouldn't use it on anything living, plants included.
There are also 185 nm UVD lamps that produce ozone as a by-product, dunno if it's better than only using UVC light / ozone?
Also I think UV/ozone would cause plastics/fabrics to deteriorate faster?
Ozone in high concentrations can eat away at certain plastics and rubber type materials. Uvc in closer proximity will do it faster than ozone.
This was a fantastic experiment, i really like this
Very interesting and informative, you covered the subject perfectly. Thank you!
This is exactly what I was looking for 👍🏼
Thank you for the knowledge
Would it not purify the air at all To set it up on ceiling like you did? I was considering putting uvc on top of cabinet (no direct light except for air) Would this be safe to leave on and would it help purify air?
If you put a UV light inside of something that moves air such as a tube with a fan blowing air through it then yes it would sanitize the air. But if the air is moving too fast past the light it would be less effective. You would also want the tube to be only about an inch or two larger than the light to keep the air in closer proximity to the light.
Ozone is heavily dependent on humidity as well?
Probably, but averaging 50% humidity is where it’s going to be most used.
Very cool.
Was wondering how UVC light would work on water?
UVC light, more the better. I started with a 6 watt, then a 22 watt, then running dual lamps. Next is 3 or 4 lamps. Ozone is produced really fast. A 15 or 30 minute exposure goes by really fast. I hope to run 4 lamps or 88 watts on a tripod.
What if UV C reflection with mirror, will it kill viruses ?
It would have to be a first surface mirror. And that still adds to the inverse square law.
You could grow some super awesome superpickle with that!
Hope you can answer this.
I had a pollen outbreak in my 4'x2'x5'ft high grow tent. I bought a similar light to yours (8w) to try and kill all the pollen. The light is hanging at about 4 feet high. I set the timer for 60 minutes. I'm going to do this a few times but I'm curious what you would do? Is what I'm doing going to be enough. My grow lights and fans etc. were covered in pollen. Nice video btw.
Water deactivates pollen. Use a sprayer
@@GrowingAnswers Thank you
What is the absolute best light to get the big bang, heavy buds. Just the best light over all. And how about Alibaba lights
Alibaba lights 😂🤣😭 is u serious?
@@HASSPREDIGER20 have you looked at the stats? I ask questions not to be made fun of .. But still much love to you because that's what I got to offer.
UVA and UVB for growing. UVC will kill vegetation. Mars hydro sp3000 has UVA and IR lighting. Pretty awesome light with full spectrum for large dense flower.
@@johnnypoe3965 Bro the last thing you should be stingy & cheap with when you grow is the light. Your grow stands and falls with the light, trust me you won’t get proper results with a cheap Noname China light from alibaba. If you don’t want to buy to expensive led lights buy some from mars hydro, but don’t waste your money on alibaba lights, trust me if you do so u will regret it
@@HASSPREDIGER20 I understand, just thought you were laughing at me for not having enough knowledge about them, sorry about that.
I bet purifying the air would really help to grow some superpickle.
I'm probably waay too late with this but here is my entry! SUPERPICKLE
been using a lot of the info from your videos to grow a Superpickle and tomatoes. excited to see the videos you make this year.
This is all interesting BUT not being a student of microbiology how does this all work out with different power levels of lights? You're using a 6 watt light so what happens with a 38 watt light - a 55 watt light - a 100 watt light?
I thought for sure the word was gonna be Marypickle, and just about died laughing when it was Superpickle
1st of all, Superpickle. Thanks for making these vids. Would you like some of my powdery mildew to test efficacy of ozone and UVC? lol I'm trying UVC to help keep it in check.
Can you make same test like exposing under uvc with that visual grown sample will they grow again or not
Thank you so much for producing this very useful and very important informative video.
Can we see a powdery mildew experiment? Pls?
Dear Growing Answers
I love this lesson and used your link, but your unit is not available. I want a unit that I can use
to disinfect computer keyboards that gross me out.
The units still available produce Ozone... Amazon U/V/C Light Lamp 185nm with 253.7nm Bulb 5ft Cord and Plug 110V (6W Ozone Lamp)
Do I have to worry about using this lamp because of the ozone, for just a couple of minutes?
A couple of passes once a day is all I really need.
Thanks so very much!
Signed
The Lysol Cootie Killer with dishpan hands
Thank you for letting me know. I added a link for the same light that is currently available but it produces ozone. I imagine the amount of ozone it produces isn’t that much unless it was contained in a box. You will probably notice it when you use it but I don’t believe it will be enough to cause any worry. If you notice the odor and it doesn’t irritate your nose or become unbearable as an odor, then it probably isn’t going to cause any harm and certainly not for the short time that you would use it. Something small like that isn’t going to produce a large quantity of ozone and the ozone amount it produces only works most effectively over a long period of time and only in smaller enclosed spaces. I probably would have used it myself too, but for this experiment it was important that I didn’t influence it with Ozone. That’s why I did not get the Ozone version
@@GrowingAnswersThanks so much for getting back to me. I appreciate it.
Well, this is a relief. I know the unit is small, but then there is danger in most everything. Best to know the tools we work with.
Can you tell me how long can I safely run the unit?
I saw one video that said this small size is good for a 10 x 10 room.
Again, thanks so much
@@momzilla9491 The amount of ozone it puts off would likely be ok for a 10x10 if it ran continuously and the room had no ventilation at all. So it’s not practical for ozone use since you don’t want to be breathing ozone constantly. If you have hvac or an open door to a 10x10 room then the ozone it puts out will be basically useless. Maybe for a small amount of odor control only. As far as the UV light….no. It won’t do much of anything in a 10x10. It needs to be within 3ft of the surface you wish to decontaminate over a time period. Or within an inch if you want to sterilize instantly.
@@GrowingAnswers Ok, so rooms 10 x 10 that I can close off, and turn off any ventilation - as far as ozone goes. This will be great for bathrooms, lockers then along with my computers! Thanks again! This is good news.
Now something for your tool chest!...
I've been making Colloidal Silver for about 10 years. It will work on mold etc if you spray directly and isn't harmful for plants, or people who are not allergic to silver, even internally.
My son's friend was raped at the beginning of this pandemic and contracted HIV. It knocked the virus down in no time to almost zero.
Spoke to my urologist about it and he has patients using it successfully for bladder infections instead of, or with antibiotics.
It's not hard to make your own, and this stuff can stay in a plastic spray bottle for years and never smells of anything other than fresh water.
Storage is different for medicinal purpose and can't be ignored.
Happy New Year!
@@momzilla9491 I’m aware of it. Also, if you want ozone, using a uv lamp of that size is not an effective or efficient way to do it. Just get an ozone generator for ozone. Or a much larger uv lamp that emits ozone. Either way you shouldn’t use it while being in an area.
Been trying to grow a Superpickle for a while now any recommendations on how to get it to bloom?
I love your videos and Superpickle!
Does Ozone or UVC cause fading in room paint, furniture fabrics and curtains
Not that I’ve heard of.
Great demonstration, thank you. I picked up a few UV mercury lamps over 20 years ago. They were part of a homemade EPROM erasing device. Each lamp came with a ballast and a quartz tube cover. I'm not sure what band mine are radiating in but it looks greenish blue like yours. The only difference is mine produce noticeable ozone with only a few seconds of operation. You are saying your lamps don't produce the ozone smell?
No not the one I have
@@GrowingAnswers but but... UV-C will always cause ozone.. it breaks down and is rearranging molecules and some of them turns to O3 aka ozone
Edit: apparently you can tune the wavelength so that no ozone is being produced
Already run a conbernation of leds including if as well helps them look like Superpickle rick.
Do you recommend using UVC or P3 to disinfect a superpickle ?
General random question does a Aquarium uvc light submersible 11.6 x 3.7 x 1.7 inches penetrate plastic at a Distance 2 feet? Will it harm being around it ?
Uvc does not penetrate plastic. And it’s not good for any living thing to be near it when it’s on.
Thank you sir, but is the UVC light affected ? is it good for kids at home and do clean the rooms from this ugly dirty things ?? please advise
Thanks for another incredibly informative video, superpickles and all.
hey great ep just found your channel while looking for this specifically to decide on a small uv-c setup for my dishes, subbed!
dish washing machine with heat dry will do. Oven and microwave will do too ( don't need to have them baking hot ).
Thank you so much 👌👌👌👌👌👌👍👍👍👍👍👍👍👏👏👏👏👏👏👏👏🙏🙏🙏🙏🙏🙏🙏🙏
Question: "If we were to take UVC and put it over something for 24+ hours, would they all eventually be sterilized?"
it only takes a short time. depends on distance though. I guess if it were 10ft away then 24 hours would likely be enough. with this size light anyway.
Does it help get rid of Superpickles??
Awesome video SUPERPICKLE 🥳
How does a UVC lamp disinfect makeup products? Does it actually work?
Only works on surfaces.
Awesome video man! Very very good.
Btw, it must be kinda weird to touch with ur hands a petri dish
Always make sure to sterilize your hands before touching your Superpickle!
My Superpickle is growing like CRAZY!!
Can't wait to grow a Superpickle !
Are you located in the USA?
@@GrowingAnswers Yes Chicago
@@garza3t You are the winner by random selection. Please remain in contact for further instruction.
@@garza3t please contact me with your shipping address. You can email me.
OMG! Thank you so much! I'm super pumped for this light.
So how long do you run the ozone unit to disinfect the 3x3 tent?
10-20min tops
Hi, im just curious cause im planning to make a purifier with uv installed, can reflected UVlight from the bulb itself still works? like putting mirror and deflect it to some parts
Well there are two problems with that. One, is reflecting light is added distance from the source which reduces how effective it is. Two, is if there is any coating, plastic or glass over the reflective source then it filters out the UVC. Many materials absorb it. Any mirror is going to filter the reflected light because it’s glass. Unless maybe it’s a first surface mirror, but I’m not sure.
@@GrowingAnswers ok ty so much for the info
How long to wait for UV light sanitizer without ozone to re turn to room to be safe?
If there is no ozone why would the room not be safe the second you turn the light off?
May I ask u to make...an experiment with (for example) red basil in white light and in red/blue light?
I think it would be interesting...to know if pigments change their way to grow
That’s actually a decent idea. I have researched red leaf plants actually. It will be on my list at some point. I don’t have any RB lights anymore though. Kind of phased out now.
@@GrowingAnswers cool. Cause I have red basil and I don't know if some green spots are totally normal or are caused by my RB light. It's fascinating
What is the expression that you use to calculate those times? I mean it is based on the ligth fluence(radiant exposure) right?
It comes down to light intensity (watts and proximity) and time. Double the distance from the initial test and you reduce the intensity by a factor of 4 and the time scales in linear with that.
@@GrowingAnswers Something like => Time = K*(light intensity)/(distance^2) ; or a similar expression?
@@eliomarconde3146 honestly I don’t use complex equations like that. But that seems about right. You can find inverse square law equations online that would be suitable for that. With uvc being such high energy photons, an equation won’t necessarily translate to real world use in ever instance.
@@GrowingAnswers ahhh ok ok thanks for the tip! I appreciate that
@@GrowingAnswers i am trying to do the calculation wtih the inverse square law that you told me. But I don't get the same result. Could give an example of what expression/values did you use?
quick pass and 1minute/5minute same distance should be apply to se exact results.
Just use a UVC light that has no filter. It's going to produce a lot of ozone as a byproduct. Best of both worlds with the ozone being produced everywhere the light gets to as a bonus.
This video tickled my superpickle.
The only thing it might be missing is a Superpickle
Nice Superpickle video good info happy new year
I hope I’m not late for the Superpickle party. I brought some beers at least.
I would love to have an expensive superpickle like that, but here in brazil it costs like an eye, an arm and two kidneys
Superpickle, thank for the great videos.
Man I was the first one to post the super pickle and didn’t get any love so I figure I needed to drop the dime again!
Superpickle. They are the best! Great video btw.