What filter to use ?

[CJP32]

Dude, your tanks sounds nice. Where are the pics?

There are a few pics under my album under "new acf tank". They are a few months old but you'll get the idea. Once I get my 130 gallon running I'll try to get some pics of it. It's going to be a piranha tank so it doesn't quite fit the forum but what the heck.