The Planted Tank Forum - View Single Post - Do you run CO2 all day or partially?
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Old 02-10-2013, 02:59 AM   #1
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Default 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?
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