Do you run CO2 all day or partially?
I just setup CO2 on my new tank. Do you usually run this all day or only when light is on? my tap water is 7.4, I just ran for few hrs today and now my tank is 6.8
If I keep it all day, will it have a stable PH and how low can of ph can it get?
If I keep only when light is on, how much swing in ph should I expect? and will this swing affect small tetras (Neon, Rummynose) and cherry shrimps?