How To Culture Daphnia and Moinas using Green Water/ Spirulina powder
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- Опубліковано 16 лис 2020
- In this video, I will show you how to raise one of the best food sources for your bettas/fish using Green water or Spirulina powder. I will also teach you how you can easily culture your own Green water and how to feed your Daphnia/Moinas with Spirulina powder.
where to buy daphnia
bwaquatics.com/collections/fo...
where to buy moinas
bwaquatics.com/collections/fo...
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Best comprehensive video for culturing, feeding daphnia + water change thus far. My fishes thank you sir.
Best daphnia video out there. Thanks for the content. Starting my culture from eggs today!
Very informative!! I overfed my moina and they all died but now I know how severe my overfeeding is after watching this video :v
Great video
I know you are making sense and covering all the important points, here.
AND, you have the most productive and Sustainable indoor culture I have seen..
I have watched a ton of videos.
Thanks! I am a very rational person
@@BlackwaterAquatics Indeed.
Good detail about water changes and Why cultures Crash! Cheers! 🍻
Scotty on Maui.
Great video....
It's a great idea to use change water. Thank you Bro.
Lesson learned... and heart melted >
Thank you for the great information I do your method and work great thank you
i loved this vid man you're awesome
Mr BW went very deep into this. Lots of cool ideas here
This video is really old and outdated 🤣
thanks for sharing awesome video i subscribed
Nice vijeo...
Very nice
I typically maintain a steady backup culture that can live without adding anything but light in a heavy planted tank. It doesn't generate enough to produce, but keeps a plan B out there. Raising daphnia is such an easy thing to mess up, but it's generally hard to completely destroy the culture. Love the video! Maybe I can get a steadier system with some automation like your plumbing thing, I picked up an AWC/ATO could be a option!
It's worth noting that daphnia produce eggs in a similar way to brine shrimp. Both species are adapted to a boom-and-bust population cycle.
Normal brine shrimp and daphnia eggs are very fragile and they require specific parameters in order to be viable. But put either species under adverse conditions and, if they are able to, they'll produce special eggs that will survive the apocalypse.
That tub in the yard which used to have a daphnia culture in it a year ago before it crashed and which has been left out to freeze over winter and now it's sitting in the blazing hot sun?
Yeah, there's probably some viable daphnia eggs just chilling while they wait for the right conditions to appear. It might just take some dechlorinated water and a little bit of patience before you manage to resurrect a daphnia colony.
So even if you do manage to completely annihilate your current daphnia culture somehow, don't assume that it's gone for good.
thanks for the informative vidio
I’m watching this guy about 2mn and I already feel like he’s an interesting guy
Thanks this is an old video but ill plan to remake some later in the futurw
Great video bro. Damn I have been very heavy on the spirulina now I no why I always crash them 🤣
nice info ... thx
EPIC!
Thank you Ahn! I’m getting my culture of daphnia started soon🙂 also I hope you get more betta rubra pairs in and betta mandor please, thank you for this great video⭐️🙏
yeah, i went to a local wetland yesterday with my bottle and dipnet, caught daphnia, and inoculated my rain barrel, which is now filled with green water. i did the same last year, the daphnia produced hundreds of thousands and in days, ate every bit of the algae, then crashed. this year i am going to feed with spirulina, so i am watching this vid again to see how to do that.
@@bobs5596 Just drop a whole potato instead of spirulina. Much cheaper and much less hassle. Drop potato once a month or few instead of feeding daily.
I can tell u first hand that plants (vegetative in particular) absolutely benefit from a longer lights on photo period.
I have kept mother plants under 24/0 and most other veg plants as well
As I understand it, algae like chlorella don't need calcium and magnesium in any significant quantity but it doesn't hurt to have some extra nutrients there.
With regards to daphnia and water quality, high phosphates inhibit breeding behavior but it's nitrites that they cannot tolerate - they can handle some ammonia and some nitrates but it's the nitrites that do them in.
I read a study on chlorella cultivation and they had the best success with fertilizer that was 24% total nitrate, 5.1% water-soluble phosphoric anhydride, and 20.5% water-soluble potassium oxide, or 24-5-20 fertilizer, dosed at 20 grams per liter with approximately 1.2 grams of urea per liter added.
Chlorella will deal with chlorine and chloramine but it will inhibit your culture. Aged tank water is ideal but you can also remove chlorine and chloramine from tap water by adding ascorbic acid (Vitamin C) at a rate of 1g per 180 liters of water. You can often find food grade ascorbic acid powder in home brew stores really cheap. Obviously, as an acid, it has the potential to throw out your pH if you use more than necessary to eliminate the chlorination so remember to be careful if you do this.
Nice video! Very informative! Just curious I detect an accent, are you originally from Australia?
No I'm vietnamese but you're not the first to have told me that lol..
I really wish I could get green water going. That seems to be the secret to getting a daphnia colony going long term.
This is what I'd do:
Use ascorbic acid to neutralize the chlorination in tap water (1g per 180 liters).
Get a glass jar or bottle, at least a quart in size.
You can try your luck with using aged aquarium water, the scrapings of an aquarium wall or an algae-covered leaf, or you can just leave the container open to see if you are able to catch some wild green algae spores from the environment. You could even do both to see what works best.
Keep the containers in bright sunlight. In about a week or two you should definitely see a tinge in the water. If it's hot where you are, keep it from getting too far beyond room temperature but if the weather is mild you can leave it outside.
Some algae are more temperamental than others, so don't get disheartened. Spirulina is a bit of a pain to cultivate. Chlorella is easier to manage. Note that a lot of algae has the tendency to flocculate, so often you'll have nice green water one day and the next you'll see a big clump of algae sitting at the bottom of the container. Don't worry though - that isn't a problem. You can agitate it to redistribute it or you can use an air line to do it for you (this is not necessary though.)
Once you're at the state where you (hopefully) have a jar of bright green water, that's when you should start thinking about using it as a starter for a larger culture and fertilizing it and everything else.
👍 👍 👍
I cultured Moinas by using white bread
Can you teach me how?
@@itsyaboi9020 Sure. It was by complete accident though so be prepared if it doesn't work. I had a 50 L tub of water about half was aquarium water I sat outside in the shade because I was culturing mosquito larvae and I put a heap of white bread to add yeast. After about a week I put lettuce as food for when it broke down and sank. This was how I made green water full of tiny life including mosquito larvae and monia there were plenty of other small creatures that looked like squid. If you don't get monia you'll sure to get lots of other small things too. I had the tub out for months and there was green algae growth on the sides and bottom.
@@Red_sm1rk Thank you somuch for answering despite me being 4 months late😁 I appreciate it. Thanks for the info!
@@itsyaboi9020 not a problem. You can always reply if you get better results I would love to see if it works for other people 😃
@@Red_sm1rk squid? You mean hydra? Cyclops?
U can lettuce or similar veggies to multiply daphnia
Did you feed sperolina powder to moina and should we do water change for moina culture . And how much
Hi BA. Awesome vid. I hatched Daphnia Magna eggs in a 10 gallon but I can't seem to be able to get the population to explode. It just stays stagnant and doesn't really fill the tank up with Daphnia to harvest. The tank has been running for about a month maybe a little bit more. I have been feeding about 10-15ml of green water everday. Am I feeding too little? Should I just take a cup of green water and throw it in the tank? I was scared to overfeed them so I used a pipette to do like 2 feedings a day but the water never really get cloudy. I have about 1 gallon of greenwater left in 2 soda bottles. When I do water change for my tanks I refill them.
Yes you can try to increase feeding
It's a bit late for a reply but in case anyone comes looking for some answers:
Daphnia magna are notoriously difficult to cultivate. If possible, try for another variety of daphnia.
Moina may be suitable as an alternative here too and they are much more tolerant of higher temperatures. Moina reproduction isn't inhibited by population density in the way that daphnia reproduction is. This can be a blessing and a curse - moina cultures tend to explode and then cause a crash for one of two reasons, unless you are regularly harvesting them to keep their numbers down. Note that due to how quickly they reproduce, that half-full daphnia culture can quickly become overpopulated in less than a week (and maybe as little as two days), causing it to crash. It's much easier and safer to overharvest a moina culture and then to give it a break so the numbers will bounce back than it is to restart a culture that has crashed. Err on the side of caution and over-harvest moina, especially if you're new to it.
The two main causes of a crash in an established moina culture are:
Having so many moina that the quantity of food required to sustain them also fouls the water, making it difficult or impossible for the moina to swim, and the food and potential mass die-off throws out the water parameters.
Having so many moina that the waste they produce causes a spike in your parameters. I don't need to explain the obvious culprits here but it's worth mentioning that when phosphorus levels in the water increase beyond a certain point, this stops daphnia from breeding. They're short lived critters so you can have a perfectly normal, happy-looking culture one week and the next week suddenly it has collapsed because the water conditions are not suitable for daphnia to breed in any longer.
How to store dhapina moina in fridge, plz make this video
could you add a sponge filter to aid with the build up of by products?
Sponge filter can trap the daphnia, youre better off running a airtube instead.
Hi, if i feed the moina with spirulina, then may feed them the green water, or carry on with spirulina only, i mean may i mix sometimes green water n sometimes spirulina?
Yes you can, but spirulina go bad so dont over do it
I have a recent problem in 2 tanks similarly lit ~12 hours a day with LED low power (10W) garage type lamps. Both tanks are well planted and long established (2+ years) They both have run crystal clear this whole time, but in the last couple of months I've had a major breakout of green water and green string algae. I heard you say in this video that long light period 12+ hours can bring on green water. I've lowered the light period to 11 hours for more than a month without result and am going to further lower to 10 hours. Besides that, I've considered introducing daphnia to go at the green water, and even though that isn't what you were going for I was wondering if you ever successfully tried using the daphnia to control the green water while also simultaneously keeping fish that predate on the daphnia. If I tried that, would the daphnia be able to keep up their population in such circumstances or would I have to keep adding daphnia to those tanks?
If you fish are not tiny, then better option are rotifers. They are too small for large fish to eat and will deal with pelagic algae in no time.
Otherwise you might want to section off part of a tank with Daphnia in that compartment. Point is to not allow the fish to eat all the Daphnia.
The above is more for fun and fiddling around.
To have it sorted for good there are few way, best when combined:
1) good filtration
2) more plants, especially fast growing plants to hoover up nutrients
3) reduced lighting
4) UV sterilizer
5) less fish / feeding the fish less
6) Dreissena polyxena, do not use sand borrowing mussels, their larvae are parasitic, with small valume and few fish, the number of mussel larvae on each fish could become deadly.
@@witekprytek9940 My 20 gal somehow righted itself. The 10 gal only had some tiny rams's horn snails and 2 amano shrimp. I acquired ~30 daphnia, put in about ½ of them March 21 and by April 21 the tank reached crystal clarity and also seeing all but a total disappearance of the daphnia population.. That event coincided with a friend neediing a B&B for his betta for 2 weeks, who is likely mopping up the remaining daphnia. Thanks for the idea of putting a separation area for the dahnia😃
Sir nice video.... i am from India not fluent in English language...will U please write with few words how to do...a humble request
what rack do you use as your aquarium stand?
I no longer use this rack as the wood doesnt withstand the wroght and the water damage over time. I would reccomend getting the heavy duty all metal ones from walmart
What about Yeast Sir why its not preferred much by you
1) How to change water, 2) how many days once, and how to change
water. 3) Alot of alage and food stay in the botton of the tank, How
to remove it. How to make sure that my tank doesn't died( crash)
Couple of times, in the night everything was fine, but in the morning,
everything of dead (crash).. ( food feed are yeast, spirular power).
Please guide the group, what are mistake, or we should not do.
Thanks for your support.
my turtle pond has no fish and is super green, if i add daphnia, will the water become clearer?
Yes and quite fast
Sir im just curious I have start culturing moina with green water.. And i have culture with G.w... And its emerald green.. But when i start to have my 1st culture of moina the green water start to getting solid and sink in the buttom of the tank after i set up my new moina culture.. Is this normal?
There are different type of green water, some algae might be cyanobacteria which would still work. In this case run an airstone
My green water also did that when it ran out of food to eat... and was dying back..
My daphnia Magna ate the suspended GW.
But, the only ones that multiplied further were the green blobs on the bottom. So, kinda normal.
I am going to try option two using tap water and Speralina, I only have one Betta fish to feed so what would be a good tank size to go for to culture enough daphnia for my single fish?
My perfect setup would be:
Daphnia over moina, unless you live in a hot climate.
A large, shallow container like an underbed storage container with a shallow layer of fine scoria gravel. (You could probably do this in a container half the size of an underbed storage container and you might have more than enough food depending on whether you're feeding your betta anything else.)
A blackworm culture (not tubifex), if you can keep the culture from getting too warm.
A few snails as clean-up crew if you happen to overfeed.
Some fast growing floating aquatic plants like java moss. Stem and rhizomatous plants are going to get in the way so avoid using them.
Chlorella over spirulina because it's easier to cultivate.
Then you can use your tank detritus to feed the algae and the blackworms. You can also throw in certain food scraps, powdered algae, fish flakes etc. but you have to be careful not to overfeed.
Your betta will absolutely love eating blackworms. They cohabitate well with daphnia and if you can make a small ecosystem that is high in nitrifying bacteria (living on the scoria gravel), that has worms to breakdown any detritus and solid waste, some snails to prevent a crash from overfeeding, some plants to absorb excess nutrients to help maintain the balance (you could also use surface plants like duckweed in a situation where you have a big ammonia or nitrate spike but otherwise they'll block the light from getting to the algae) then I think you'll have a sustainable live food culture for your betta that requires minimal input once it has stabilized.
Do you own blackwater aquariums
great video thanks !
could I just change water from the fish tank to the daphnia tank and the daphnia tank to the fish tank if the fish tank is a big planted tank?
No because the tds would be too high after a while
I have been trying to grow green water for 2 weeks. I notice a film on the water and wonder if it is bacteria because the water is stagnant. What do you think? Is this normal?
The water should be slightly green by now, if theres a film there might be too much organics
Other than decay and bacteria or fungus... The only thing I know that cause a biofilm or oil slick... is duckweed.
As he said, too much food or organic matter..?
Rotting causing bacteria bloom..
That is fine. You don't really need "green water" to culture Daphnia/Moina. They are doing even better feeding on bacteria. Just introduce your Daphnia/Moina starter. If the population starts going down drop in piece of potato or even whole one. Have to match the size of potato to volume of water in your culture. Too much potato will cause too much bacteria, depletion of oxygen and Daphnia/Moina crush. Not a biggie. Just wait a bit till the bacterial bloom died down a bit and introduce another Daphnia/Moina starter.
Green water is good, but only if it comes with no labor or energy costs attached Instead of wasting energy on lights or time on messing about with green water just feed the bacteria with manure or potato/carrot/beetroot and your Daphnia/Moina culture will thrive.
I have been doing it for YEARS.
How do you make green water for daphnia? I believe my angel fish would really appreciate daphnia. Thanks for your time with this video!
Old tabk water, make sure its hard, then leave it out in the sun.
@BlackwaterAquatics Don't I have to be concerned with mosquito larvae outside? Im in florida. Is there a way to do this inside near a window so that no other criters get into it? I do have a pepple substrate outside that is totally green currently.
@@reneesnugent3358 yes cover it with glass or something to block the mosquitoes, if you are diligent enough you can actually just grab the mosquito eggs
Should I throw out the pepple water that's green? Or pour out the pepple water and start over?
Also I see that you offer a site to purchase the daphnia. Another question, how long before green water has to set before adding daphnia? Sorry for so many questions! Thanks for your help 😊
Any chance that the spirulina could have some active's in it ? To start a culture ? Any spiro tanks of yours look more green , like they're alive ?
Not sure, i don't think spirulina powder is active. What i do know is that spirulina needs very high gh and kh as well as some salt to flourish
You add the moina starter on the green water or the moina will come itself ata the green water u cultured?
You always want to culture the green water seperatelt
where do you live , i like some of your fishes , if i can get some
kindly recommed me the best food for daphia that I should use in my lab?
Take a small scoop of the culture water out into a cup and mix in spirulina powder and dry yeast in equal amounts until the water is completely clouded with the mixture and let sit for a few min for the yeast to activate. I then take a pipette and slowly add the mix in small drops until the culture water turns cloudy green. Wait 12 hours to a few days for the water to become clear (depends on amount of daphnia in culture) as the daphnia eat the mixture, before feeding again.
Slice of potato. Once starts decomposing it will provide ample bacteria for Daphnia/Moina to feed on. Easy, cheap and hassle free.
I've watched a LOT of vids on this. many culturists state that they like decaying stuff. The water seems soo slimy. I may have overdone the chlorella powder as my water is pretty green...I changed the water by filtering The moina out and putting them into a small plastic container while I clean their jar and fresh water cuz I think it's gross. It's just a gallon jar. I keep the temp at 77 with an air stone. Why does the water get so slimy? Can you put Moina and Rotiffers and Triops in the same container?
It just normal brown algae growth that occurs naturally in uncycle environment doesnt necessarily mean that the water is bad. I would upgrade to a 20 gallon to reduce the frequency of water changes. I WOULD NOT keep moina with triops and rotifers because rotifers can attach themself to moinas and triops are predators.
@@BlackwaterAquatics thanks for the clarification.
How to know when its time to Feed them again with this amount of spirulina?
This is an old video, ill remake a new version sometime in the future. You just gotta not be greedy and use the daphnia when you have alot
2:12 where is Wally ? :D
Haha i just realize that right now
Is it better to keep daphnia in shade?
Not really they are attracted to light
Hi, where are you located in socal. Can I purchase a culture of the Daphnia and the moina to start my own. Thank's
im in southern CA, you can buy from my site and PM us on facebook for a local pick up.
@@BlackwaterAquatics darn u were all out when i looked so i ordered eggs. glad to know ur close by.
@@aryah1513 i had some but they sold out quick, come back to me in 2 weeks.
Is this ok also in fry flowerhorn?
Actually i think itll be ok since flowerhorns like harder water
I bought a daphnia culture many years ago, and they all died off. :( I guess I wasn't feeding them right. Used too much spiraling powder and yeast, and didn't do any water changes...idk i had to perform water changes for them. Also, I had a airline tubing with a rigid airline attached. I guess it was too much for them too.
i think the best way to get lots of daphnia - is simply collect them from small pond which doesn't have any fish in it. if it doesn't have daphnia either, you always can inoculate it with daphnia from ebay or from other source.
I cultured daphnia moinas using washed rice water
Can you explain how, that sounds cool
@@shannarafryer3111 simply pour it directly into your daphnia culture but feed them once a day just a small amount of washed rice water to avoid pollute the culture
@@samueloliveros6219 oh okay thank you
I found Waldo
Spirulina and yeast do not contain b12 unless it has been added which is common but neither contain it naturally
Youre right, the green algae chorella contains v12 not spirulina
@@BlackwaterAquatics forgot to say you've earned a sub!! Very well made video 😁
@@ryanboscoe9670 thanks this is one of my first video, i want to remake this video for an update.
VIET SAUCE LEGGO
How to change daphnia water???
Pour the water through a brine shrimp net
Cholera spores…🙄?
Please spike in hindi
OK so I know this is an old video, but when fertilizing your stock water, why not use urine so you have your waste ammonia? I know it’s kind of gross but still.
I have so many fish that its better to use old tank water. But now i move away from that and just use store bought fertilizer, mostly because im afraid of disease spreading.
@@BlackwaterAquatics thanks for the reply!
Holy fuck why is there so much b roll, is this a guide or a vlog?
Moina is daphnia, and uses just as much food. I'm confused by you saying they don't consume as much food?
moina is a different smaller species than the two more common types of Daphnia, Daphnia pulex and Daphnia magna. Moina are supsed to survive a wider range of temps and tolerate more polution but are more sensitive to pesticides in the water
@@MoreChannelNoiseVery good answer!
Not sure why are you complicating things.
Two ways to culture Daphnia/Moina :
1) 200L drum, 10-15L bucket of cow/horse/chicken manure. Drop manure, fill up with water. Any water. Even tap water is fine, straight from the tap. Wait few days to 2 weeks. Depending how fresh your manure was. Introduce Daphnia/Moina. Thats all the work for a season or more. No need to do anything else. Just harvest whenever you need fishfood.
2) same as above, but you can use raw whole potato instead of manure. Take large potato, do not peel, but make small hole, with a pencil for example and drop into the drum. After while just keep harvesting. Once population goes down drop in another potato. I like potato, cheap and easy, but can be any root veggie, carrot, swede, beetroot etc. Dont use onion, garlick or leak. Might work, but risky. Never tried. There was no need. Potatoes are everywhere and cheap 😂
Make sure you drop in some chalk or eggshells for calcium.
There might never be green water if Daphnia/Moina multiply fast enough to suppress algae from start.
Not a problem. Manure or veggies provide plenty of food for bacteria which in turn are foid for Daphnia/Moina.
They are actually more nutricious than algae.
No need to aerate unless you overdo with manure/veggies and wayer goes anaerobic and smelly. Just wait a bit, till the bacteria bloom goes down a bit and put another Daphnia/Moina starter.
Thats why you should always have more than one culture going. If one crushes you can replenish stock from another.
I think you've got a good method there and as far as I'm aware it's one that is commonly used in Asia, where daphnia and moina are grown at a large scale.
A couple of points though:
The lab studies of daphnia and moina are based on the nutritional content when they have been raised on spirulina or chlorella because it's much easier to maintain sterility and to control for variables that way. This means that daphnia which are fed a diet of manure or food waste may not have the same nutritional value and they may not be rich in omega fatty acids etc.
Daphnia that are fed spirulina, chlorella or similar algae like haematococcus pulvialis accumulate xanthines, which are one of the major compounds that bring out the color in fish when they have a diet rich in them. This is also why flamingoes are so pink in the wild. If you are feeding fish daphnia that aren't raised on a diet of green water, they aren't going to contain those compounds for your fish to absorb upon eating them (unless you start getting very technical and have a specific food regime for the daphnia).
Last of all people prefer daphnia to be gut-loaded with algae because it's very healthy for fish to eat, so it's a way of sneaking vegetables into your fishes' diet. This is another benefit that you get from algae-fed daphnia.
Not saying that your way is wrong or that the other way is the right way - if it works for you then go nuts. Just thought I'd add a bit of information to the discussion so people can figure out what works best for them.
You are nice man and the video, the info are nice too. But to listen background music 24 minutes was disgusting! Thumb down definitely! 😠😠😠
poor fish .... so dirty
Betta not beta
I always get a few people telling me im pronoucing it wrong so im going to answer your question regarding the pronounciation. In american english its often times pronounced as bɛtə as in Bay -Tuh, in fact this is how wikipedia has it. Its not technically incorrect like tomato is either Toe-Mah - toe / toh-may-toe . Here everyone calls it bay-tuh and some people call it Bet-tuh , no one really have an issue so i never thought about it. Like everyone else how i pronounce it is base on how i heard it from others around me, so not really a big deal tbh.
Daphnias ang moinas???? Lol those things that you call daphnias are called daphnia magna and those that you calls moinas are also daphnias. They're called daphnia moina.
So, therefore, they're all daphnias.
Daphnia and moinas are in different genus under the order cladocera. Daphnia magna is the most common cladocera raise for food under that genus, but there are different species with varying size. Moinas are much smaller than daphnia and have young that are the size of baby brine shrimp. People use the two terms not because they are different genus but because its and easy and also correct way to differentiate between the two.
@@BlackwaterAquatics lol they are the same. There's one other kind of daphnia the daphnia pulex
@@BlackwaterAquatics moina and magna are daphina. Just different classes
@@rexela2101 You should fact check your own facts before fact checking other people's. Everything you said was wrong. Daphnia Magna and Moina Macrocopa are 2 different species/genus as their names indicate. You don't get to make up your own names "Daphnia Moina" is not a real thing.
Daphnia's Details (public information)
Class: Branchiopoda
Order: Cladocera
Family: Daphniidae
Genus: Daphnia Müller, 1785
Moina's Details (public information)
Class: Branchiopoda
Order: Cladocera
Family: Moinidae
Genus: Moina Baird, 1850
@@aryah1513Very very correctly . Good answer Man❤
U smoke any weed while filming this?
Lol no 🤣🤣🤣