How to make easy CO2 for your tank? Cheap and easy DIY CO2!

How to make fast, cheap and easy DIY CO2 system (reactor)? Super simple! Follow along my instructions and your plants will love it!

CO2 caps:

Recipe:
10g (0.35oz) instant yeast
400g (0.35oz) sugar
1L (0.25gal) water

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#co2diy #co2reactor #co2

[AquascapingCube]

Do you have any better recipes for your CO2? Let us all know in the comments. And please don't forget to leave a like :) Thank you!

[alexbwja]

A rare straight to the point well spoken amazing quality video on YouTube !Much respect brother I'm glad I learned something today

[kevinsmith]

I cut small holes in the tube and wind it through and around my plants. Works great. Shake sugar jug daily. Last time around a week.

[CraigsOverijse]

thank you for the simple cheap idea to try out co2 for not a huge investment

[raymondburniston]

Whats the purpose of the valve you fitted please

[gabriellerozelski]

Thank you! I didn't understand why the second bottle of water but now I understand and I made a little C02 for my system to try it out.

[オメガです]

Now this was awesome. Thanks you once again!

[trak]

WOW simple yet very effective thanks for sharing this :)

[lukaszef]

It's weird that it works :P But the end result looks very nice!

[Spacey]

That's genius! I've made wine before but would never have thought of this. I have a very small tank with a few guppies in it & this would be ideal, better than the electric pump I bought as that's too much for my set up. Also with the cost of living crisis at the moment it's an added bonus that no electricity is being used. Thank you. Subscribed 😊

[Akane_Shinde]

The small bottle is used to neutralize alcohol so that the CO2 that enters the tank does not harm fish and plants because of the chemical reaction and the water will not become cloudy. 😊

[mikemcinturff]

Thank you for this video that was straight up to the point and very informative. Probably the best CO2 video I’ve watched.. only question I have is where did you get the diffuser? Thank you again for the great video

[FoXMaSteR]

The second bottle is interesting but according to GPT it's only effective if the tank is very small, on larger aquariums it's very unlikly to dirty the water with that system. Yeasts requires sugar to make fermentation so inside the aquarium it would die, of course there are still sugar produced by plants but they eat it, and if the yeast reaches the water it will be in competition with the other aquatic bacteria that are stronger to survive in this environment... So it's pollution but the yeast itself will be eated by these micro-organism, that could increase the pollution, but not more than a full piece of yeast dropped inside the water, which wouldn't be enough to destroy an aquarium that has a good balance. 🤔

However it would be cool to make a real test to check what's the reality. Because I hear many things about that system that make no sense with physics or sciences. For example many put a valve to prevent water to come back in the tube and merge with alcohol, how ? Do they think the absence of pressure will strive the water in the water and merge with alcohol ? But you have days to see the reaction dying and as you must keep the CO2 stable it would already be a fault to wait that much. Then even when the yeast is dying it still produce a small amount of CO2 that keeps the pressure in the tube, in fact you need a certain pressure for the bubbles to cross the water, so when you still have a very small amount of bubbles it means there is no chance the water could do the path in reverse, in any case nothing in the bottle has the ability to create some void inside it, so if you let the bottle for weeks maybe the CO2 could escape slowly but if the tube lets the CO2 pass it also let the air pass, so it doesn't create any void either. 🤔

In fact even if you suddently open the bottle you stop the pression in the tube, so there is no more pressure in tube and the water of the aquarium could go inside the tube, but this water will be blocked precisly at the surface, as the tube necessarily has to exit "above" the water, the water inside the tube couldn't cross this area even if the tube goes down afther that and if the bottle is under the aquarium, nothing strive the water enough to create a siphon effect.

Then I read the presence of water inside the tube could affect the CO2 when you'll renew the mixture as the CO2 will dissolve with the water remaining inside the tube. But as the pressure will increase this water will be pushed outside the tube, in the aquarium, so if you don't let the tube wet for months there is no risk of problematic bacteria, but even the idea dangerous bacteria could appear inside the wet tube is weird as if the water of the aquarium reached it means the bacteria of the system can also reach it, they also breath and feed, so the inside of the wet tube has the same bacteria as the outisde of the tube that is underwater, it would be weird to let the tube underwater for months and even if you do it, nothing will happen.

According to the chimical reaction you don't get only CO2 with the yeast and sugar, so if these gaz were thin enough to reach the tube of the first bottle there is no reason they wouldn't escpae the water of the second bottle too. Big particules will be stuck in this secondary filter but not the gaz. In fact a total of 5 different gaz are produced with the CO2 and only 2 of them can react with water (CO2 and CH₃COOH), these 2 will change the pH of the second bottle and then the water of the aquarium.

So... We need some tests please 🤗 For example after the reaction the first bottle smells like ethanol, which is normal and a proof some gaz that aren't CO2 are released (CO2 doesn't smell anything), is it the case for the second bottle too ? I suppose the second bottle smells like ethanol as the gaz is trying to escape but there is no ethanol in its water, which is a difference with the first bottle. When you drop the first bottle on the floor it will smell ethanol a lot, but I suppose the second bottle wouldn't smell as there is no liquid ethanol inside it. It would be interesting to test the water of the second bottle, as the CO2 affected it I suppose it's an acid water, but is it dirty water ?

In any case don't drink the water, 1L of water with 200g of sugar and yeast will produce about 120ml of ethanol, which is about 2, 4L of a 5% beer...

[esequiel]

Hello what's the link of co2 diffuser?

[zaharudinhashim]

Can share what and why the safety valve for?

[Nelson-wemm]

very good and well explained. I thought for a long time about making one at home. But never dared until I saw your video. Now I have bought the things to make a co2 at home. You say in the video that you should have more yeast if you have a larger aquarium. I have a 180 Liter at home, how much more yeast do I need to mix in then? I think you have calculated what you are mixing specifically for your aquarium. Thanks for the video... Greetings from Sweden!

[Rick-xybt]

What is the purpose for the 2nd bottle of straight water. I have seen some videos that go from the sugar yeast solution direct to the diffuser in the tank, and no 2nd bottle of water.

[OndraZak]

I did my system exactly as shown in the video but after few days the bubbles stopped producing. Checked is there is any weak spot where the pressure might be escaping but didn't find any. I remove the air stone at night and put it in a cup with water, is it possible that the quick transfer from aquarium to the cup when it is out of water for few seconds might be causing this?

[kobirozen]

hi waht is the powder that you pour into the botel please? i couldn't Anderstand

[aravisish]

This is cool. I always wanted to try this but never did :P