Ok, hears a thought. What if I used Both. What if I bought a Sand system and hooked up a cartridge sytem to it. The sand filter and pump system would be hooked up like normal but instead of going right back into the the pool have it run into a cartridge filter to filter out the fine particles and then back into the pool.

This would be like drinking water filtration with a coarse prefilter and a fine (polishing) filter.

The Sand Filter would take out all the big stuff (prefilter) and the Cartridge filter would remove all the fine stuff. This way the Sand Filter acts a a pre-filter protecting the Cartridge filter from stopping up. At least in theory.

Any thoughts on this set up. Seems like it would work. Any one tried this yet.

Aranon