The Reef Sump Series is a speciality sump designed to accommodate larger skimmers and multiple reactors . Much like the Reef Series, these units utilize laser cut technology and cast acrylic. These Leviathan Reef Sumps incorporate many features starting with dual inputs into a silencer chamber and a third input to accomodate non-tradition overflow system, such as Herbie, Bean, and Durso plumbing configuration. In most models, the sock chamber is interchangable between 4″ socks, 7″ socks, and dispersion plates (for filter pads). After the water leaves the mechanical filtration, it enters a skimmer/reactor chamber that also incorporates an apex probe holder, doser line holder, and an adjustable water gate allowing you to control the water level from 6″-12″ to accomodate most skimmers/reactors! The water passes through a bubble trap then into the return that can accomodate an internal or external return pump.