Filtration For 55 Gal Aqarium?

[Tolak]

I have 4 ac mini/20's I bought a year or so ago, they stand up well to the abuse. Since upgrading from 20's to 29's on those tanks I got in some ac200/50's, if they are slacking at Hagen, I'll find out within a month. New hob's get run until they slow down seriously or start pushing up the lid. Gotta test that warrenty!

 

[Trance2006]

Like I said not those. I have an AC 200/50 the two larger models after those have problems.