Description The Advance Series is designed for the serious hobbyist with a very unique three water channel design. In addition to all the benefits of our 3rd generation refugium sump, the advance series also features a third compartment that allows hobbyist to add bio-balls or matrix to their system for additional filtration. The unique Eshopps Channel Design (ECD, Patent Pending) enables three independent compartments to fit into one compact size sump while providing enough space for each compartment. Features Unique Three Water Channel Large Skimmer Compartment & Viewable Refugium in Front Built-in Probe Holder & Float Valve Removable shelf Quiet Operation Specifications Model Dimensions SkimmerCompartment ReturnCompartment RefugiumCompartment ADV-100 24"x12"x16" 8"x13.5" 6.5"x8.5" 9"x8.5" ADV-200 30"x14"x16" 12"x13.5" 7.5"x8.5" 10"x8.5" ADV-300 36"x16"x16" 16x15.5" 8.5"x8.5" 12"x8.5
