I currently have a Pentair System 3, 600 sq ft cartridge filter. I'm due for new filter cartridges and in my search have learned they don't make this filter system anymore and the cartridges are very difficult to come by, not to mention crazy expensive if you can find them. Leslie's recommended I switch to the Pentair Clean & Clear Plus 520 sq ft filter, which is honestly close to the same cost as just the System 3 cartridges at this point. Thanks to this site and all of you, I've learned to take Leslie's advice with a grain of salt
so I'm seeking a second opinion. Anyone have anything good or bad about the Clean & Clear system? Or other recommendations? My pool is 21K gallons. Also, how difficult is it to swap it out? Worth paying someone, or DIY worthy? Looks pretty straight forward. Thanks!