Ok Thanks everyone. I like the clam idea. And I thought the bio/mech
filter should do its job. I am looking for the flower basket type thing.
I am going to take out the prefilter, The put the clam on it. I think
that would be good. The punp does have 1/4 inch vertical openings but I
think maybe to much bad stuff might clog the inpellor. So I will try it.
Thanks