The Planted Tank Forum - View Single Post - getting rid of black brush algae
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Old 02-12-2005, 08:53 PM   #8
Kris
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when doing diy CO2, how do you test for CO2 ppm? i look at the bubbles as they come out and by the "eye-ball" method, there seems to be 1 bubble per minute...how do i know what that translates into??
thanks
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30 gallon tall, pressurized CO2...killer lights
50 gallon long, killer filtration, low tech otherwise
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