I have a 30 gallon tank with about 4.2 wpg. My plants usually grow pretty well and i am pretty liberal about my maintanance and fertilizing the tank.
I just wanted to know if two 2 liter DIY co2 bottle is enough for the tank. I do have small amounts of cyanobacteria on the glass from the start of setting up this tank but it is a problem you can't see unless you are very close up to the glass and it dies off and then comes back every once in a while. It usually dies off around water changes and picks up whenever my tank gets stirred up.