OMG I am so grossed out... hubbys little prefilter thing definately works. The plant pond water wasnt exactly crystal clear, but visibilty was still pretty good. Some yuck from a tipped plant, but nothing major .. well, it's been 5 days and he is cleaning it ... ALL that is in the barrel is one floor buffer pad, that is notched to go around the 3" pvc, and the pump sits on top to feed the normal filter ... one side of the pad was soooo dark and gross ... never seen one of the filters so bad after months, let alone five days. Im not kidding, when he rinsed the pad in the tub (which has a slow drain), the water was nearly black ... so maybe he was right and it would extend the pump life LOL ... now I guess I have to give in and let him spend the money he wanted to, to build it right ... point proved ... I was wrong AGAIN ... shhhh, wont admit that TOO LOUDLY to him;-)