Over filtered

[Cheapeeper]

Can an aquarium have to much filtration? I have a 20 gallon with a Black Convict pair. I was thinking even though it's a 20 gallon on getting a filter for a 30 to 45 gallon. Would this be to much filtration?
Is there such a thing as being over filtered?

 

[SpeedEuphoria]

No such thing as overfiltered. But you can have too much current for specific fish. Many people run filters larger than the manufacturers claimed output. Like many use AquaClear 50 filters on 20 gallon tanks and such

 

[Cheapeeper]

I will be having a pair of Black Convicts in the 20 gallon with a filter for at least a 30 or possibly a 30 to 45 gallon filter. The Convict in my 55 gallon does fine with current so I dont think they will have problem.