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DIY D201/301/501 CO2 units

1743 Views 2 Replies 3 Participants Last post by  Darkblade48
Hi, has anyone used one of these diy CO2 systems sold online/eBay? It has needle valves and uses citric acid instead of yeast and from the little info I can gather, critic acid is much more consitent.
I am mainly looking into this as I don't want the fluctuations associated with the yeast method = algae issues.
If anyone has any experience with these units or any input would be greatly appreciated. Thanks.
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Even with citric acid and baking soda, you'd get fluctuations, I'd guess.

This is the typical acid/base reaction, so once it has gone to reaction (which it does, relatively quickly), you would have no more CO2. I would say you'd be looking at changing the mixture on a daily basis just to keep a consistent CO2 level.
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