I am curious, does anyone use more than one of the standard foam blocks inside the AC 110, instead of using one foam block, bio-max, and replacing the carbon with some thing else?
WyldFya;1124716; said:Yes. This is the best way to run them for mech filtration.

It will work for any size of ac.boisblancboy;1124798;1124798 said:I am sure it will work with the other sizes of AC's, but I figured I would ask as well. Can I do the same thing for the smaller sizes of AC's not just the 110? Also heres another question, not along the same line. I want to replace my OLD Whispers on my 55 with either two AC 70's or 110's. In my whispers, they have two cartridges and two foam pads, so there really isnt much for bio, but they seem to work just fine. I leave the cartridges in there just to help filter debris out, but I never fill them with carbon. Now if I change to the AC's, would I nessessarily have to add some media in them for bio, or will the surface area of the foam blocks be enough?