Replacing cartridge with sand

[mas985]

Twice a year? I clean my cartridge weekly during the summer and fall. Twice a week in the spring. Once a month (roughly) in the winter.

Your cartridge filter is obviously way too small for your pool. A properly sized cartridge system should only need to be cleaned once per year. Also, frequent cleaning is probably the reason you are replacing them so often. I have had my cartridges for 8+ years, clean them only once per year and the filter pressure never gets more than 1 PSI above the clean filter pressure.

I am also one of those people who would never trade a cartridge for any other filter type. I just think cleaning it once a year is far easier than backwashing many times per year (my parents had a sand filter).

[dansdad]

let me say the filters are the same size that cane with the pool. I have never changed the size. I have 4 cartridges that barely fit in the housing so there is no room for bigger. I only clean about 2-3 times a year. Im going to clean them with cleaner and wash completely. My filters are Unicel, so no cheapies there. I'm hoping by through cleaning each time it will get better