The Reef Octopus Regal 300-SSS Protein Skimmer fits the top-of-line 500-740 gallon rated Regal platform into a Space Saver Sump body. Same 36V VarioS-6S pump and full control suite as the standard 300-INT, sized for sump compartments that need a narrower footprint on a large system. Bioload capacity: 500 gallons (heavy), 620 gallons (medium), 740 gallons (light), excluding sump Pump: VarioS-6S variable-speed pinwheel pump, 36V, 5 power settings Control features: float switch input, 15/60-minute feed-pause modes, 0-10V third-party controller input Body: space-saver hybrid conical acrylic body For large systems where sump width is the constraint rather than skimming capacity, the 300-SSS delivers the same top-tier Regal performance as the 300-INT in less space.Compatible replacement parts: VarioS-6S pump kits sized for the Regal 300 series.
