thanks guys really appreciate the responses...

big bird, i appreciate the offer...i really need the external to sump one though thanks.. i should have stated dnw-110

just to explain...im doing a nano buildoff on reef tank and the rationale is that im using equipment that has been used, got off someone else, fixed, or made... also stocking from other reefers or aquacultured... its a 20g size sump max, and i have one that someone gave me... i actually have a 10g i was going to use as a remote dsb filter as well but have been told that counts as sump, so cant use it :(

the tanks an 18" cube, and quite nice