The Reef Octopus Classic 90 HOB Protein Skimmer represents a unique approach to hang-on-back filtration, featuring a cylindrical main body and robust capabilities for aquariums up to 130 gallons. Its innovative intake device effectively skims the water surface, diligently removing unsightly oil buildup and dissolved organic compounds that can accumulate and impede crucial light penetration in your reef environment.

This skimmer boasts a sophisticated design with a cylindrical reaction chamber, a dedicated bubble chamber, and a conical body-to-neck transition. These elements work in harmony to gently manage air and minimize turbulence, ensuring stable and highly efficient filtration performance. Powering this unit is a Reef Octopus Aquatrance 1000s Pinwheel Pump, consuming just 9 watts while achieving an air draw of 420 lph and a water draw of 350 lph. The compact footprint measures 7.5 by 7.5 inches with a total height of 23.8 inches, making it a powerful yet space-conscious addition to your setup. Setup and operation are designed for ease, complemented by a two-year warranty on the pump body and one year on the pump rotor and skimmer body.

This protein skimmer is an excellent choice for reef keepers with aquariums up to 130 gallons, particularly those without a sump or with limited space for in-sump equipment. Its hang-on-back design combined with easy setup and operation makes it ideal for both novice and experienced aquarists seeking reliable, high-performance water purification without the complexity of an internal skimmer. By efficiently removing surface organics and enhancing water clarity, it contributes significantly to a healthier and more vibrant reef system.