CO2 on the rise
My drop checker is slowly turning from green to yellow, because my DIY CO2 is finally functioning properly.
I have otos, angelfish, cories, and neon tetras, how sensitive are they going to be to this?
I increased my photoperiod from 6 to 8 hours thinking that they plants will use more CO2.
How soon will my fish become sick, or will their lives be threatened?