The AQUAJET PFN 500 model is designed for indoor use - PFN 500 fountain pumps are designed for pumping and filtering water in home pools. The AQUAJET PFN line of pumps is distinguished by very high efficiency, relative to their power. This is due to the use of modern energy-efficient motors and high-quality gaskets under the rotor chamber, which reduce yield losses to aminimum. Moreover, the latter solution allows the pumps to operate out of water (they are completely sealed) and boosts the height of water head, so that AQUAJET PFN pumps can serve as circulation pumps.