Too much oxygen?

[fishmeister]

Is there a such thing as exposing fish to too much oxygen? I know that plants provide natural aeration but I also have a powerhead. I have gotten in to the habit of turning on the powerhead when the lights are turned off because I know that plants consume oxygen at night. Is it detrimental to use a powerhead in a planted tank?

tia

 

[Guest]

Yeah. It can reduce the CO2 levels.

 

[lmw80]

Too much air can stunt the growth of plants, due to what rex said, the reduction of CO2.

 

[Bearfan]

Too little can cause asphyxiation, which is where the balance comes.