Diy co2 30ppm 20 gallon - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 06-19-2015, 03:15 AM Thread Starter
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Diy co2 30ppm 20 gallon

Hey everyone,

So I'm running a diy yeast co2 setup on my 20 gallon. I started running two 2L bottles with a 2 cup sugar 1tsp yeast and 1 tsp baking soda mix in each. I had an algae breakout so I got a drop checker and it showed yellow, it's the insta drop checker looks like fluval. So I added a third bottle with the same recipe.

I'm still not able to get the 30ppm needed for green, I've read of many people with 2 2L bottles getting 30ppm on a 20 gallon how is 3 not doing it for me? Bubble counter is doing maybe 2-3 bps I'm diffusing to a fluval ceramic diffuser sitting underneath my HOB. The HOB isn't causing any surface disruption just a couple ripples.

Feeling like giving up on diy but really don't have the money for a proper pressurized setup... Any advice is appreciated!
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post #2 of 7 (permalink) Old 06-19-2015, 03:31 AM
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I had 4 gallon bottles running into a 20 gallon tank at one point. It still wasn't enough. Perhaps the hob is degassing too much.
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post #3 of 7 (permalink) Old 06-19-2015, 03:31 AM
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Yellow means more CO2 then green. Blue > Green > Yellow.
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post #4 of 7 (permalink) Old 06-19-2015, 03:51 AM
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I am using 2-3liter bottles with your same recipe in a 40L.
It can obtain 60ppm if I don't watch it.
Using a DIY reactor after canister output.

Degassing is occurring somewhere in your process.


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Growing is not that difficult.
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post #5 of 7 (permalink) Old 06-19-2015, 11:43 AM Thread Starter
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I'll turn down the flow on the hob it's an aquaclear 30 but could it really be degassing that much? The water level is over the hob's outflow so it doesn't drop out and break the surface it just pushes the water.

Is my positioning of the diffuser okay? I read somewhere to position it near the intake of the filter but if the HOB could be degassing should I move it away from the filter? I was hoping the filter outflow would help push the co2 through the tank.

Correct me if I'm wrong but according to the fluval and insta drop checker yellow means add more co2, green is good, and blue is you have too much?
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post #6 of 7 (permalink) Old 06-19-2015, 12:46 PM
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Blue is too little. Green is good. Yellow is too much.
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post #7 of 7 (permalink) Old 06-19-2015, 08:30 PM Thread Starter
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Wow I feel stupid here I am trying to get more co2 when I already have too much :S thankfully none of my fish gassed out. Will be lowering my co2.

Thanks for your help!
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