Replacement filter Sponge for the All in One Pond Pump Filter & UV – CUP 129 will also suit CUP 609

FUNCTION

The Black sponge pad is designed solely to fit the CUP 129. It is a fine(35ppi), foam sponge. It acts to collect smaller particles of waste and also provides a culture medium for essential aerobic filtration bacteria

EFFECT ON FLOW RATE

Because it is constructed from quite fine sponge it will reduce the flow rate of your filter when blocked and dirty. Reduced filter flow rate can be catastrophic for pond water quality. The solution is thankfully simple – just rinse the sponges as required in a little pond water and be prepared to replace the sponge as required.

LIFESPAN

The sponge should last several months of average use and may be rinsed in a little pond water at filter clean out time (the dirty water should then be discarded). Older sponge inserts tend to become blocked very easily because their cell structure is less resilient, for this reason we suggest replacing it every four to six months.