THE AQUARIUM NITROGEN CYCLE

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  • Опубліковано 4 лют 2025

КОМЕНТАРІ • 825

  • @AquariumCoop
    @AquariumCoop  8 років тому +96

    *To figure out how often you need to do water changes on your aquarium, download our free infographic that guides you step-by-step through the process. **geni.us/WaterChangeGuide*

    • @Ants_major
      @Ants_major 8 років тому +3

      Aquarium Co-Op great video cory just got my new betta for my 180 litre tank😄

    • @Ants_major
      @Ants_major 8 років тому +2

      Aquarium Co-Op do you have any tips to look after betta

    • @arnodrijfhout3858
      @arnodrijfhout3858 8 років тому +2

      Jack Kent Are you like a new guy to betta?

    • @courtneycoulson1564
      @courtneycoulson1564 8 років тому

      Aquarium Co-Op hi Cory how comes out of all the live bearers you don't seem to like swordtails? ???

    • @NeonTetraAquarist
      @NeonTetraAquarist 8 років тому +7

      Aquarium Co-Op No Cory this is fine JUST THE WAY IT IS!😁😂😂😂😂😂

  • @boscohemi3874
    @boscohemi3874 7 років тому +446

    One thing you can tell about this guy Cory is he is not out to rip anyone off. Explains everything right down to the penny. I wish We had a guy like this here! I would never buy from anyone else again.Guys like this everyone should support. ( Canada)

    • @AquariumCoop
      @AquariumCoop  7 років тому +28

      Thank you for the kind words Bosco

    • @wendysterlingcarr
      @wendysterlingcarr 5 років тому +2

      Bosco Hemi I always buy my sponge filters from Cory

    • @aspectinc
      @aspectinc 5 років тому

      Bosco Hemi why did you put (Canada) in brackets ?

    • @seratonin7004
      @seratonin7004 4 роки тому +1

      I agree! I'm in Australia

    • @fishenthusiast5408
      @fishenthusiast5408 4 роки тому +4

      @@AquariumCoop Could you please put a online shop in Canada if not I understand have a good day

  • @djndjn
    @djndjn 8 років тому +85

    Hey Cory. When your store recommended running my 55 with two sponge filters i was skeptical. They heard that my goal was to create a planted community tank. After five months, the water chemistry is so good that I have a hard time justifying water changes. My fish could not be happier as evident by the amount of offspring now swimming all over the tank. My plants grow like weeds and look amazing. I appreciate the great advice that I get from you and from your store team. Thank you!!

    • @AquariumCoop
      @AquariumCoop  8 років тому +16

      +djndjn glad to hear it. Sounds like you have built a strong ecosystem.

    • @CatFish107
      @CatFish107 7 місяців тому +1

      Replying years later to see if this sends you a notification, and to ask for an update on your tank, please. Hoping your ecosystem remains stable and vibrant.

  • @AdamTillontheWeb
    @AdamTillontheWeb 8 років тому +133

    I wasn't sure I completely understood, so I went out and got my own educational props. I'm good now (and full).

    • @AquariumCoop
      @AquariumCoop  8 років тому +26

      practice makes perfect.

    • @OnHisDime
      @OnHisDime 6 років тому +3

      haha

    • @wendysterlingcarr
      @wendysterlingcarr 5 років тому +3

      Adam Till from Arctic Lights Aquatics yes I learned that I need m&m’s to cycle my tank. I love the process lol

  • @ethanna1684
    @ethanna1684 8 років тому +249

    I wish when i was sucking on my syphon changing water m&ms came out rather then gross aquarium water

    • @AquariumCoop
      @AquariumCoop  8 років тому +32

      I wish they did too. Have you seen my video on how to gravel vac? In most cases you should be able to avoid ever having to suck on the end of the hose to start the siphon. ua-cam.com/video/LYv5n0a85OY/v-deo.html

    • @ethanna1684
      @ethanna1684 8 років тому +16

      Wow thats so much easier, thanks for linking that video

    • @tbas8741
      @tbas8741 7 років тому +3

      You know that water specially Dirty is hundred times worse than LITERALLY Licking a Public Toilet Seat..
      Another tip to start is end of hose in buck put a turkey baster or large syringe on it then pull the plunger up fast and all the way apart it will suck up and flow :D

    • @bebebutterfield1
      @bebebutterfield1 7 років тому +6

      My turtle tank makes chocolate walnut turtle candy....I wish.

    • @ashleymaree329
      @ashleymaree329 6 років тому +5

      My husband did this the first time he tried vacuuming the gravel when I wasnt home... 😂😂 Laughed my ass off when I showed him how you can make it start siphoning without putting your mouth on it! 🤮

  • @AQUAPROS
    @AQUAPROS 8 років тому +156

    Great video Cory, Love the way you chose to explain it :)

  • @twodaend
    @twodaend 7 років тому +107

    Holy cow, this was one of the easiest to understand explanation of the nitrogen cycle and how bacteria colonizes I have ever seen. Now I think I understand why my fishless cycle is taking forever. Along with the tank and decor, I have a canister filter and obviously my tank and decor bowl has not fill up yet and/or I have so much more room still in my canister filter bowl, thus the bacteria is taking longer to fully colonize and eat the added ammonia. I'm going to keep waiting, but now I think I understand. Thx for a great video and explanation.

    • @cremnallac4494
      @cremnallac4494 6 років тому +3

      twodaend do you have fish in your aquarium now?

  • @peteon4wheels627
    @peteon4wheels627 6 років тому +36

    This is the best way I have found on the net, Cory you need to take up teaching part time as your great at what you do, rock on Cory.

  • @jimmyreese4740
    @jimmyreese4740 4 роки тому +6

    This is the first Aquarium Co-Op video I ever watched and Cory did an amazing job explaining the nitrogen cycle.I was just about to give up so glad I found this video and became a better aquarium keeper an a Aquarium Co-Op fan for life.

  • @CYL347
    @CYL347 7 місяців тому +4

    I love how he explained the difference between nitrite and nitrate while pronouncing same.

  • @jci8972
    @jci8972 6 років тому +7

    Spot on with your analogies and making the topic really easy to digest 😆. This made the cycle process less daunting to deal with and answered so many questions I had. Thank you for putting time into your videos! We’ll be swinging by your shop again soon to say “hi” to Murphy!

  • @arnam3282
    @arnam3282 Рік тому +2

    I don't know how many times I watched this video, and I am still watching it. For me, this is the single most influencing video to get me in the hobby. For this, I am forever grateful 🙏🙏

  • @lizhelm9922
    @lizhelm9922 2 роки тому +8

    Thank you!!! Homeschooling family here. (I also love learning and enjoying nature!) I can not thank you enough for spreading your knowledge and passion. Your videos are personal and you're the teacher that says "there are no stupid questions" I can't thank you enough. I would have given up by now without your videos

  • @xfahrenheit2581
    @xfahrenheit2581 Рік тому +5

    The only video that made me understand that frickin' Nitrogen Cycle, made me subscribe on the spot! So nice of you considering us, visual learners! You're the best, man! Thanks!

  • @piipaatirullaa
    @piipaatirullaa 2 роки тому +2

    Finally an aquarium video, which explains 'everything' crystallized in a few sentences. Thank you !

  • @myagroenhagen3991
    @myagroenhagen3991 8 років тому +23

    This is a brilliant way of teaching the Nitrogen Cycle! Thank you!!!!

    • @AquariumCoop
      @AquariumCoop  8 років тому +4

      +Mya Groenhagen hope it helps someone out there :)

  • @bookmouse770
    @bookmouse770 6 років тому +14

    I was telling my family about your superior video and my daughter wants me to explain it to her while using M & Ms over the weekend. :-))

  • @pawelmatus
    @pawelmatus 7 років тому +181

    But my fish don't go to the bathroom, they just do it in the tank. lol

  • @justjoshin5140
    @justjoshin5140 Рік тому +1

    You’re the best dude! You’re my go to for anything fish/aquarium I need to know. I appreciate the effort you put in so much. I’m basically going from only knowing fish need water to knowing everything like nitrogen cycle and a lot more so I can keep my fish and aquarium healthy and thriving!

  • @tinynina76
    @tinynina76 9 місяців тому

    You're a great teacher! Thank you. 😁

  • @ashpaws6708
    @ashpaws6708 6 років тому +3

    I love the way you filmed this with the cards and stuff. I had no idea about the Nitrogen Cycle until I started watching videos like this and looking on forums. It was soo confusing but this really cleared it up! Many of my fish in the past have died mysteriously, and now I understand why they did. There was probably sooo much ammonia in the tank! I feel really bad now, but luckily I am planning to get a tank with a couple mollies, so I can retry.

  • @dloz85
    @dloz85 Рік тому +1

    Thanks for this video. I knew this but didn't KNOW it, you know?

  • @tallen6285
    @tallen6285 8 років тому +6

    Love your videos. You have filled a niche that helps so many aquarium hobbyists with your knowledge and practical tips. Looking forward to more species videos, either fish or plants. Keep up the great work !!!!

  • @justanotherpersonhi7215
    @justanotherpersonhi7215 9 годин тому

    Every other video I found was vague or just trying to promote a "instant cycle" product, this is helpful to understand the processes

  • @therandomgoat2908
    @therandomgoat2908 4 роки тому +4

    3 years late to comment but this really helpme understand more! I like how you make it more simpler than other youtubers. Thanks for the info!

  • @plushpossum
    @plushpossum Рік тому

    This is hands down the greatest video ever made for fish keepers. Anyone buying their first aquarium should be REQUIRED to watch this video!!! ❤Absolutely a staple in the hobby.

  • @resilientrecoveryministries
    @resilientrecoveryministries 3 роки тому +4

    I am always impressed at how well Cory explains things.

  • @krissanamay2194
    @krissanamay2194 6 років тому +2

    I've been looking on UA-cam for someone to explain this cycle to me so I can completely understand it, and you Sir, did that. THANK YOU!!!

  • @elchicanofinikero1780
    @elchicanofinikero1780 5 років тому +3

    This video actually helped me understand that a lot better, I'm planning to work at a fish store and now I know how to explain the nitrogen cycle to customers

  • @jimbobjones5014
    @jimbobjones5014 5 років тому +1

    I'm about half way through the video, just finished the summary of the nitrogen cycle and wow it was made simple and understood, thank you so much for all your help and support with new aquarists 🙏👍😀

  • @3D1ofakind
    @3D1ofakind 5 років тому +1

    You have no idea how helpful this video was, thank you. Subscribed

  • @kathieperron5627
    @kathieperron5627 Рік тому +1

    Thanks for your easy to understand videos with great explanations that get right down to the nitty gritty.

  • @PolarAzulTigris
    @PolarAzulTigris 6 років тому +2

    I just wanted to say thank you; this is my to go to video to explain the Nitrogen cycle to a new fish owner. Also first video I actually understood what I was doing wrong with mine so thank you again.

  • @Lifewithpets72
    @Lifewithpets72 8 років тому +8

    This was fantastic information so clearly and concisely put! Those M&M though were making me hungry!

  • @dangavioli1656
    @dangavioli1656 4 роки тому +1

    This is the single most important video for the new aquarist!!! Thank you Cory and all of the aquarium coop team that made this possible.

  • @laattardo
    @laattardo 7 років тому +1

    I'm a beginner, and this video is great. I can say I had no idea about this subject and now I do! Thanks for putting this out there!

  • @2DebbieDoo
    @2DebbieDoo 7 років тому +8

    WOW! Five years ago, I spent over a year researching and fretting before I finally put my tank up and "cycled" it. Then waited another 6 months before I finally put fish in, I fed the water food every day! I was a wreck over the nitrogen cycle. I learned MORE in 17 minutes then I ever learned from the web! AND it was a whole lot more fun, please tell your wife thank you!!! Take good care of you and yours.

  • @martyndurrant1643
    @martyndurrant1643 8 років тому +1

    that was awesome I was a bit confuced on what happens but now I'm all good so thank you for putting time and effort in doing this and I hope you enjoyed your m&ms

  • @monique6ful
    @monique6ful 5 років тому +1

    I’m a newbie in the tank world and this was very clear and concise and made me understand. Thanks man I truly appreciate it

  • @brooksmenard2256
    @brooksmenard2256 8 років тому +5

    I wish my teachers at school taught like this I learned so much

  • @klutziekat7709
    @klutziekat7709 3 роки тому

    This video is so wholesome! Love coming back and watching these old videos, the channel has grown so much 💙

  • @kaglione
    @kaglione 7 років тому +1

    Thank you, very easy to understand. Probably the best starter video I have seen.

  • @lilbmxman66akax999thhokage
    @lilbmxman66akax999thhokage 2 місяці тому

    Dude, wow, holy crap this made this sooo much easier to understand 😅

  • @brittanydrake5794
    @brittanydrake5794 5 років тому +3

    Cory, this is amazing. Thank you soooooo much. This has answered so many questions as someone who is still fairly new to the hobby. This is a life saver 🙌🙏❤

  • @jem-agemstoneonlydiscovere8134
    @jem-agemstoneonlydiscovere8134 7 років тому +5

    Smashing video Cory. Helps visual learners like me. Learning is always fun. Just got into aquascaping and most of your videos re-assures me. Thanks and keep up the good deed!

  • @ImJustFunSize
    @ImJustFunSize 8 місяців тому

    Wow! This was the best teaching video ever. Thank you for making this so easy to follow!! 😊

  • @TheFreakinpenguins
    @TheFreakinpenguins 5 років тому +1

    Really great video! I did not think of the nitrogen cycle this way, but your demonstration made it easy to understand.

  • @Myname2663-w2z
    @Myname2663-w2z 7 років тому +1

    Best video ever! I loved the props. It really simplified the concepts and looked delicious. Thanks so very much.

  • @Thatblue35
    @Thatblue35 5 років тому +1

    I’m just starting out with my first tank and your videos are helping me out so much! Thank you for making these videos which are easy to understand and are very helpful!

  • @aljanecko
    @aljanecko 6 років тому +1

    Best video I’ve seen about the cycle, you made it very simple to understand.

  • @gavinjones916
    @gavinjones916 Рік тому +1

    Omg thanks so much that made so much sense

  • @Carloszengotita
    @Carloszengotita 8 років тому +1

    really found this video very fun to watch it felt like I was back in school ,u did a terrific job Cory

  • @LindaLights
    @LindaLights 5 років тому +2

    Such an excellent tutorial, especially for a beginner like me. Really get a lot out of your videos, thank you!

  • @Mihigo26
    @Mihigo26 6 років тому +12

    This video finally helped me understand it. Under-rated video, a must for any newbie! KUTGW.

  • @michellelemoignan608
    @michellelemoignan608 7 років тому +1

    Really great video!! I love the work you put into actually showing the process through the use of M&Ms! Thank you for sharing!

  • @FlynnsFishForum
    @FlynnsFishForum 8 років тому +1

    Awesome video Cory! I really enjoyed it! The candy really made a good visual.

  • @alimorland7524
    @alimorland7524 8 років тому +73

    "Ite is yikes! and Ate is A-Okay!" was how I first taught myself the difference.

    • @glendasworld4125
      @glendasworld4125 5 років тому +3

      Good one. I just learned the difference with no trick. Lol.

    • @deborahjeanne2141
      @deborahjeanne2141 5 років тому +3

      😍 what a great way to remember!

  • @karthikkannan6753
    @karthikkannan6753 2 роки тому +1

    Brilliant stuff candy man, Thks! 🇮🇳

  • @aliciap9922
    @aliciap9922 3 роки тому

    This is such a wonderful and simple way to explain the nitrogen cycle! I'm totally going to use this visual to help explain it in my pecha kucha in my public speaking class.

  • @wolfenspeign
    @wolfenspeign 4 роки тому

    Thank-you so much! As a Fish Noob, who recently got a 5 gallon tank with some Guppies .. and being frequently unsure if things are good/not good, and using the wal-mart test strips to check if things are ok -- this video (and i've watched 5+ other ones on the nitrogen cycle now) really helped me truly understand what exactly is happening, and i can relax, as I also see my fish are just fine, and i've just been a bit paranoid. Thank-you so much for the excellent, very EASY visual explanation.

  • @johnwright3306
    @johnwright3306 3 роки тому +1

    I've learned so much from you , really makes the hobby easier and enjoyable

  • @stojohnny
    @stojohnny 8 років тому

    Great video. I'll be sharing this with my brother and sister. I gave each of them aquariums a while back and this will far more informative than I was trying to explain it to them. Keep up the great work!

  • @aaronr5287
    @aaronr5287 4 роки тому +1

    Thank you so much for your videos man, I've been keeping fish now for about 3 months and I've learned so much from you brother. Thank you!

  • @skg122596
    @skg122596 7 років тому

    I only recently got a water feature in my backyard and added 3 goldfish to it and am admittedly absolutely clueless as to how to maintain the best environment for them. This actually explained it to me in a way I could understand so THANK YOU!! I will definitely subscribe!!

    • @AquariumCoop
      @AquariumCoop  7 років тому

      Glad the magic of candy could help ;)

  • @DannysAquariums
    @DannysAquariums 8 років тому +2

    Great video again Cory!
    I think many people will learn from this! Even I did!
    Haha you ate all the M&M's after?!
    Are you going live tonight?
    *_Keep up the good work and thumbs up!_*

    • @AquariumCoop
      @AquariumCoop  8 років тому +3

      I'll be live tonight. Yes.

    • @DannysAquariums
      @DannysAquariums 8 років тому +2

      Ok, great Cory! Then I can set my alarm! haha!

  • @ZugieXIII
    @ZugieXIII 8 років тому

    This is by far the best Nitrogen Cycle video I have seen. Fantastic!

  • @peachypanda96
    @peachypanda96 8 років тому

    Thank you for making this video Corey!! I'm in the process of researching and setting up my first proper aquarium and this was really helpful in understanding quite how the nitrogen cycle works! It can be a little confusing to new fish keepers and having a visual (and probably very tasty) representation of this process makes it so easy to figure out!!
    Of all the things I've learnt from your channel so far I think this one will stick with me the most!!
    As always, I love your videos - I find them not only really helpful in planning and understanding what i will need for my tank but also really fun to watch! I'm always looking for aquarium related channels but yours is always by far my favourite! My boyfriend and I are planning a trip to the US (we live in the UK) and I'm really hoping we can come and see the shop for ourselves!! I'd love to meet you someday as i feel like I could have a really interesting conversation with you and pick up loads of great tips!!
    Again, thank you for taking the time to make this content as I'm sure its exhausting running the channel, running your store and keeping up with all the comments people like me leave on your videos! I think I can speak on behalf of many of your subscribers when i say, seeing the little notification that tells me you have uploaded a new video really brightens my day!

    • @AquariumCoop
      @AquariumCoop  8 років тому

      +peachypanda96 I'm glad I can help those new to the hobby. This video was targeted directly towards someone like you.

  • @fishtales2597
    @fishtales2597 7 років тому +1

    Hi thank you for explaining this, I now understand how the tank cycle works. Brilliant.

  • @KalindiYoga
    @KalindiYoga 4 роки тому

    Great video 👍 Using the M&M makes it much easier to understand. Thank you.

  • @Michael10755
    @Michael10755 6 років тому +1

    Dude! your the absolute best! Extremely helpful, knowledgeable, and ya get me to chuckle at the same time.. Thanks @Aquarium Co-Op

  • @tracytamura7121
    @tracytamura7121 7 років тому

    This is great . I will use this in homeschooling the kids today . Thanks

    • @AquariumCoop
      @AquariumCoop  7 років тому +1

      Don't forget to pick up the m&ms! :P

    • @tracytamura7121
      @tracytamura7121 7 років тому

      We have lots of m&ms from Easter . Lol. I have been trying to teach my 6 children about how to maintain a tank . They help with all aspects of a 120 Mbuna tank & a 75 planted angel & rainbow fish tank . This video will be an awesome teaching tool !

  • @AtomicJenga
    @AtomicJenga 2 роки тому

    Best video demo of "cycling" on the internet!!

  • @monicabassett783
    @monicabassett783 3 роки тому

    Trying to get my 7yr excited about the hobby. He was totally into the M&M explanation. Thanks!

  • @kaylawolfie1111
    @kaylawolfie1111 4 роки тому

    I need a refresher since I just set up my new 40. Been a while since I last cycled a tank. So thank you man.

  • @cristopherrodriguezmatias9337
    @cristopherrodriguezmatias9337 4 роки тому

    My godson understood the nitrogen cycle thanks to this video. I'm helping him start a new aquarium from scratch. Thanks for the amazing work.

  • @ejfishes7610
    @ejfishes7610 8 років тому +1

    Thanks Cory appreciate the information in that forum!

  • @CBales2006
    @CBales2006 3 роки тому

    Best visual ever! I so needed this

  • @liliana9485
    @liliana9485 4 роки тому +1

    this really helped me! thank you so much for making this easy to understand:)

  • @DiscuskwekerijBeSunshineValley
    @DiscuskwekerijBeSunshineValley 6 років тому +3

    30 years aquaristics and after seeing this video i can only say: YOU ROCK

  • @alanp1385
    @alanp1385 5 років тому

    You make it simple, you keep it
    light and you also entertain.
    You’re a funny guy Cory. That’s why
    I love your videos. Thx 👍

  • @marcoa.camacho1288
    @marcoa.camacho1288 8 місяців тому

    Wow, came across this video and it is very very clear to me now what nitrogen cycle is. Thank you so much

  • @marcimcintyre723
    @marcimcintyre723 5 років тому +1

    Thank you so much for this video. It has been very helpful.

  • @meanmugaquatics4063
    @meanmugaquatics4063 6 років тому +1

    Great video, love the visualization. Simple and direct approach to the bacteria colonization question. Thank you sir.

  • @Dom-co9sx
    @Dom-co9sx 4 роки тому

    By far best video on cycle ive ever seen omg!!

  • @australestarr
    @australestarr 5 років тому

    Thank you for this explanation, it was very useful to help educate our 9 year old about the why's for caring for his new fish tank.

  • @joeestes4958
    @joeestes4958 4 роки тому

    Perfect way to explain! Thanks Cory. Saving this video for whenever I am asked about the nitrogen cycle.

  • @sabrinamoore6551
    @sabrinamoore6551 6 років тому +1

    this is such a helpful video when trying to understand nitrogen cycle!

  • @nathanhoveyaquatics
    @nathanhoveyaquatics 26 днів тому

    Are watching in 2025. I don't think videos like this ever lose value. Thanks for making all the videos you have as they can be used as cheat sheets/ brain reminders.

  • @kyletullyowns
    @kyletullyowns 3 роки тому

    Ive seen SO many of your videos but this is hands down the most entertaining 🤣 if only my water changes had blue m&ms come out of the hose.

  • @Sarah-oh8si
    @Sarah-oh8si 3 роки тому

    Thank you so much for this video and explanation. I have just started working at a pet store and have no fish experience. I need to learn and this was amazingly helpful, cheers

  • @nevermindlaughs
    @nevermindlaughs 2 роки тому

    we don't deserve you cory lol , thanks for all the help you and the aquarium co-op team deliver time and time again.

    • @nevermindlaughs
      @nevermindlaughs 2 роки тому

      bonus points for being legit and keeping the mistakes, point very well made, stupid clear, love this video

  • @catlash3540
    @catlash3540 7 місяців тому

    This was awesome. It helped me and my kids understand better

  • @thecreativestudio9557
    @thecreativestudio9557 2 роки тому

    Thank you! This video helped me so much with visualising the nitrogen cycle. Great video :)

  • @Lauritsen24
    @Lauritsen24 7 років тому

    Im so happy i found this channel. This makes things very clear.

  • @amandamccollister7373
    @amandamccollister7373 5 років тому

    you are so good at teaching people how to take care of their fish and aquariums. Thank you and God bless you.

  • @all_about_manny3875
    @all_about_manny3875 8 років тому

    Great video. Helped a lot. This is the kind of videos I like to see. Something to teach me. I'm new at all this. I have started guppy and molly breading. And I'm loving it because I watch ur videos.

    • @AquariumCoop
      @AquariumCoop  8 років тому +1

      +Amanda Martin glad I could help Amanda. I try and get a mix of different skill levels for videos to try and make something for everyone.

    • @all_about_manny3875
      @all_about_manny3875 8 років тому

      Aquarium Co-Op this one helped me greatly. I plan on continuing watching ur videos as I go along with this hobby. Thank u so much!

  • @Daveydriver
    @Daveydriver 6 років тому +1

    Excellent video Cory. I would love it if you could do a video on maintaining healthy bacteria when you do a major overhaul on your tank. Especially when your filters are switched off for some time.

  • @wishdragon147
    @wishdragon147 3 роки тому

    Thank you so so so much!!! I am a visual learner and felt so stupid not understanding ☹ Thank you this is Great 😁

  • @merseytrainz
    @merseytrainz 6 років тому

    What a Great video, this visual demonstration of the Nitrogen cycle shows us in a simple way the mysteries of the cycle itself, Many Thanks

  • @jackchristensen5370
    @jackchristensen5370 8 років тому

    Awesome vid cory! Very helpful. Probably the best video I've seen on the Nitrogen Cycle!