Reef Octopus Classic 150INT Protein Skimmer In-sump protein skimmer for aquariums up to 150 gallons Aquatrance 2000 Pinwheel Pump - offers super efficiency and the very best in performance Bubble Diffusing Chamber and Full Cone Body that naturally reduce and stabilize the foam production; This means less turbulence in the neck area and more contact time for organics to rise and collect Turbulence reducing bubble plate Small Footprint: 12.4" x 8.7"; Body Diameter: 6"; Height: 22"