Bruce, in my tank I have a small pump that pumps the water up and drops it into a small basket full of quilt packing. I bought the quilt packing (which is synthetic cotton just like the aquarium stuff) from Walmart years ago. It came in this big box that I believe was ten pounds for like nine dollars. I just pull off the size I want and throw it away when it's dirty. The only thing I don't like is the small amount of splashing.
