ESHOPPS Royale Reef Sump from the Professional Series incorporates everything an expert level Aquarist would need. Dual 9.5” filter socks, large adjustable water height Protein Skimmer chamber, a comfortable return pump chamber and a multi-use Refugium, ATO auto-top off or frag tank chamber with float valve installed. These features and versatile multi-purpose use design make the Royale Reef Sump from the Professional Series the best choice sump filter for experts and professional Aquarist alike. Experience the luxury of the ESHOPPS Royale Reef Sump.