SICCE engineer their skimmer pumps SK & PSK from the ground up to run with maximum efficiency, low heat and reliability to produce pumps that are beyond compare. Every component of the entire pump, not just the impeller, is designed specifically for protein skimmer applications. This is what SICCE engineers call “AIR QUALITY”! Because the pumps are designed specifically for skimmer use, they offer the most efficient air mix ratio. The hydraulic and the mix of water to air flow is optimized for the intake and the pre-chamber design.