The Two Little Fishies Phosban Reactor 150 NPX Adaptor is a vortex generator for fluidizing the NPX BioPlastic and other biopellets in the Two Little Fishies Reactor 150. This will keep the biopellets from clumping to together and allow for the use of a smaller pump. The recommended pumps for use with the 150 NPX Adaptor are the Sicce Syncra Silent 1.5 Multifunction Pump and the Sicce Syncra Silent 2.0 Multifunction Pump.