I am looking to buy a cartridge filter system for my pool. I have an opportunity to get a used industrial grade unit that meets my GPM and is over my cartridge area needs pretty cheap. My question is if anyone has any experience with either the technical specs of the micron level in the official pool cartridge filters. I know the pool school article says down to "10" but is that for most? I have searched over the net trying to find the details and nowhere to be found.
More specifically If I buy this unit I was considering to buy a 5 micron (absolute rating) since DE is suppose to filter down to three. I am assuming it wont get clogged too quickly. The unknown is if will be 3 months or 3 days. Anyone tried a 5 or have more insight of levels?