I think I got my idea from another member on here but I am too tired to go and look it up right now. So here goes. I used a large household water filter. I fixed a piece of pvc piping inside the lid to force the water downward. I then put 3 stages of filtration on the inside; that filter floss, then a sponge, then foam, then ceramic rings. Hooked a 1000 gph pump to it and walla, a new filter for my new indoor pond. Thanks for the inspiration whoever posted it first. Seems to be working fine.
