Originally Posted by perkyp
nfrank -- What do you actually put in the Sump for filtration? I'm coming from saltwater, so I know some people use live rock rubble for biological filtration. Do you add bio-balls or something like that? Is there any type of mechanical filtration? Your tank is very nice by the way.
in answer to this and earlier questions: sump sealed
-- Octopus 1000. Mine has a venturi input. I dont know if that is standard. There is also discussion elsewhere on APC about a "mesh mod" instead of the standard needle wheel impeller. Plumbing
-- output of NW in input of Sump return pump. Filteration material
-- My sump is like a refugium. No wet-dry section or bioballs. I use 2"wide coarse poret sponge... i got it from the guy in Columbus. Each section fits tightly across the sump. I used it to make 3 compartments in the sump. The middle compartment sometimes has fish. Several compartments have plants. There is a 20w light over the middle compartment; It is a nice holding tank.