What does everyone use to keep their water crystal clear? I've been using Aquaclear Quickfilters attatched to an aquaclear 402 powerhead it seems to do the trick but changing them every 4 or 5 days is kind of a pain. I have an old Vortex Diatom Filter but set up and teardown is a project with that thing. I see they now have a full time model(http://www.bigalsonline.com/catalog/product.xml?product_id=22061;category_id=1713;pcid1=2885;pcid2=). Does anyone have any experience with this thing?