Reef Octopus Regal 250SSS Protein SkimmerHeavy Bioload (Most Common) 250 Gallons Medium Bioload 475 Gallons Light Bioload 600 gallons Reef Octopus In Sump 10" 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 13. 8 x 11. 6 Height 24. 5 Recommended Water Height: 8" 10" Reef Octopus Regal Skimmers now