Control Flow, Silently The heart of our most popular product "The Great White Skimmer DC" is now available as a fully functional, dead silent and controllable return pump. As you know this pump packs a huge punch of flow at an ultra-low energy output as well. Control your flow rate, and enable feeding pause modes all in an easy-to-use DC controller that attaches to your cabinet door. Be sure to group with "The Great White Wave Maker". Feed Modes In Complete Silence SILENT - SMART - EASY 20 Flow Settings - Control your pump speed with absolute precision 4 Mode Settings - Constant, pulse, gyre and feed modes Detachable Controller - Waterproof union connection and adhesives for cabinet installation Integrated Memory - Keeps programming even during power outages. Feed Mode - Shuts down for 15, 30, 45 or 60 minutes. Submersible - Perfect as a return, closed loop, or reactor/filter pump. Super Quiet Operation - Literally whisper quiet at less than 25 decibels The heart of our most popular product "The Great White Skimmer DC" is now available as a fully functional, dead silent and controllable return pump. As you know this pump packs a huge punch of flow at an ultra low energy output as well. Control your flow rate, enable feeding pause modes all in an easy to use DC controller that attached to your cabinet door. Efficient - Safe - Reliable 20 Flow Settings -Control your pump speed in the slightest of increments Detachable Controller - Waterproof union connection and adhesives for cabinet installation Integrated Memory - Keeps programming even during power outages. Feed Mode - Shuts down for 15, 30, 45 or 60 minutes. Submersible - Perfect as a return, closed loop, or reactor/filter pump. Super Quiet Operation - Literally whisper quiet at less than 5 decibels