Hi Greg the 30 gal conical setteling tank is plumed right from the tank overflow to the setteling tank, it is designed to catch detritus and provide a easy way to remove it from the systum before it settles in the sump. This along with my tank being bare bottom helps me keep an eye on my nutrients as a posed to not knowing what is hiding in a sand bed.
Bear bottom? Didn't even think it! What are you using as the fake substrate?