Reef Octopus Regal 300SSS Protein SkimmerHeavy Bioload (Most Common) 350 Gallons Medium Bioload 550 Gallons Light Bioload 700 gallons Reef Octopus In Sump 12" Space Saving Protein Skimmer from Reef Octopus with a controllable VarioS DC pumps to process more or less water, depending on your setup with a pump integrated into the body of the skimmer saving precious space in the sump. Footprint 15. 2 x 13 Height 25. 6 Recommended Water Height: 8" 10" Reef Octopus Regal Skimmers now incorporate