Sponge on CPR Overflow?

[Hiker4twenty]

Should I remove the sponge on the overflow? I think it can trap nitrates. Is it necessary to have?

 

[dcantucson]

I have heard most do, but if you clean it a least once a week it will be okay.

 

[Hiker4twenty]

I'll probably just take it off. I think cleaning it is a pain in the a$$.

 

[Reefrookie]

I kept mine on and clean it weekly. But then again, I get bored easy!:D

 

[Hiker4twenty]

I'd rather just keep it off then have to remember to clean it weekly. Also, it gets gunked up pretty quickly and I don't need any additional nutrients introduced into my water.