Pawfly Pond Filter Sponge Set for CPF-2500

Owners of the Grech or SUNSUN CPF-2500 pressure pond filter need pads cut to that housing, and this set holds four: 2 yellow and 2 blue. The foam is soft and springy with open pores, so water passes while debris and food scraps stay behind. Its surface also gives bacteria room to settle once the pond filter is established.

Unpack the pads and let them stand for 24 to 48 hours, or soak them, before they go in, then rinse in cool water to clear the dust. Plan on a change every 2 to 4 weeks. The set fits the CPF-2500 only, so confirm the model name on your filter before ordering.