I have a Marineland biowheel 200, and after I put my sand in It got pretty dirty and stuff, so I cleaned it out and after words put it back in and it stoped working? any ideas? basically it just won't suck up the water so it can be filtered-- i'm really confused! here is a link to the filter--http://www.arcatapet.com/item.cfm?cat=9858
thanks!!!
thanks!!!