Cohen Posted September 3, 2021 Share Posted September 3, 2021 (edited) Hi I am setting up my own co2 system soon and have a few questions! • How many bubbles per second for a 20 gallon and 7 gallon tank. • when should my co2 start after the lights are on my lights are 7 hours a day. • what is a ideal psi for 7 and 20 gall Thanks Edited September 3, 2021 by Cohen Link to comment Share on other sites More sharing options...
Mmiller2001 Posted September 3, 2021 Share Posted September 3, 2021 BPS is irrelevant. You want the CO2 on anywhere from 2 hours to 1 hour before the lights come on and CO2 off about a hour before the light turns off. The type of diffuser you use will determine the PSI needed. I assume that's what you are asking in regards to PSI. You want a 1.0 to 1.5pH drop from fully degassed water to peak CO2 injection. This is the best way to determine the desired CO2 ppm. Here's a great resource to get you started. https://www.2hraquarist.com/blogs/choosing-co2-why 1 Link to comment Share on other sites More sharing options...
Cohen Posted September 3, 2021 Author Share Posted September 3, 2021 Thanks Link to comment Share on other sites More sharing options...
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