The Reef Octopus Elite 150SSS 6" Space Saver Protein Skimmer is an innovative in-sump filtration device designed for saltwater aquariums up to 400 gallons. It provides powerful organic waste removal, utilizing a unique space-saving footprint to fit into sumps with limited room, ensuring a clean and healthy aquatic environment. Constructed from high-quality cast acrylic and PVC, this skimmer features a Super Cone "wine glass body" that naturally stabilizes foam, and completely disassembles for easy cleaning. It is equipped with a controllable VarioS-2S pinwheel pump, offering 5 speeds and an integrated memory controller. Key features include a "twist and lift" collection cup for simple removal, an easy-to-use vented wedge valve for precise control, and an underwater outflow for quiet operation. The VarioS controller also includes a float switch connection with an included float switch for added security, plus two pause/feed modes for 15 or 60 minute intervals. This skimmer is ideal for reef aquarists seeking a high-performance filtration solution for medium to large tanks where sump real estate is a premium. Its refined control options, quiet operation, and advanced safety features, such as the integrated float switch connection, make it perfect for hobbyists who prioritize ease of use, robust performance, and peace of mind in their system management.