Here is what my sump area looks like. The sump is approx 12 gal with three compartments, the deepest of which is hidden by the center brace. From left to right: pinpoint PH monitor, sump fan that comes on with the metal halides, clamp on sump light w/19watt 65k flood lamp, autotop off dbl floats in middle sump compartment, Remora pro skimmer, 5 gal tupperware kalkwasser container with 301 pump for the auto topoff.