Description Pondmaster PM800-1000 Prefilter Sponge Prefilter sponge plus adapter. The prefilter sponge provided with the pondmaster pump is more to prevent the rotor from being blocked. The adapter prefilter sponge is a larger sponge than standard. This allows a larger water intake area reducing the stress on your pond pump. The sleeve can be easily removed and cleaned and replaced. For use on smaller pond pumps remove the larger adapter to reveal the smaller thread. 75 x 75 x 200mm
