Many manufacturers recommend they be replaced every year. We find that you can often go two or possibly three years. After this time, the pores clog up and the filter itself is breaking down. The back pressure on your system rises as the cartridge ages. If your filter cartridge is squishy and discolored, the bands going around the filter are breaking, or the back pressure has increased, it’s time to replace it. Visit our Cape Coral Pool Store to get a replacement.
