The Reef Octopus Bubble Blaster 3000 Skimmer Pump (HY-3000S) is the OEM pump behind the SRO 3000 In-Sump Protein Skimmer, rated for approximately 425 GPH max flow. It's purpose-built for air shredding rather than a modified water pump, with a digital control circuit board and a clear volute housing for easy inspection. Best for: direct OEM replacement for the SRO 3000 and other compatible Reef Octopus skimmers Flow: approximately 425 GPH max flow Design: purpose-built pinwheel skimmer pump, digital start-up/RPM control with auto-shutoff on fault, transparent volute housing Warranty: 2-year pump warranty Note that some skimmer models may need an additional adapter part to fit this pump — check compatibility before ordering if replacing a pump on a different model than the SRO 3000.Compatible with: SRO 3000 In-Sump Protein Skimmer and other HY-3000S-equipped models.