While I can agree, Sq Ft is Sq Ft, it takes all of 3 minutes to backwash, clear and have a sand filter filtering again. Even the small filter on my hot tub takes longer to clean, I can't imagine how long it takes for those huge 4 filter jobs......If one was to need a SLAM, there is no comparison. Square feet are Square feet and the much smaller sand/DE will clog that much sooner needing maintenance. The same amount of algae needs to be killed and filtered either way.
Am I reading you have been unhappy wit the Aquapro Cartridge System? I just ordered it as this was suggested by the pool company I purchased the pool from too.i have had a cartridge filter (AquaPro 190 SQ. FT. Cartridge Filter System 2-HP 2-Speed Pump) for the last couple of years with my 33' AGP and am thinking about changing over to a sand filter. I am sure i haven't had a great experience considering the brand i have is cheaper and likely lower quality, but i dream of just turning the valve to backwash instead of cleaning the filter.
If you search and read up on the conversations about sand and cartridge you'll find people happy with both. For cartridge filters bigger is always better. Way less cleaning. Undersized cartridge filters sound like a real pain. I know nothing about the brand you just ordered but I'd check anything out here with a question before I buy unless I know a lot with my personal experience.Am I reading you have been unhappy wit the Aquapro Cartridge System? I just ordered it as this was suggested by the pool company I purchased the pool from too.