Changing filter on my CRS tank?

[genesis]

I have a mature CRS tank. Now stable with airpump and fan.

Can i replace the airpump with water filter?

Will upset the environment?

Now 3 CRS pregnant.

Please advise.....thank you.......

[Quixotic]

Not too sure with what you mean by water filter. Do you mean the waterfall type filters that hang on from the tank?

[genesis]

ya! change to hang-on filter.

[doppelbanddwarf]

Maybe you can phase in the hangon filter slowly. If the flowrate is adjustable then start at a low speed.

[leeruisheng]

I think shouldn't be a problem. As the air pump does not carry any bacteria colony for filtering. But i think it's better set lower water level so that the movement of water from the over hang filter will dissolve air. unless you've enough aquatic plants producing oxygen.