Does anyone know the difference between the Pentar Clean&Clear Plus filters? I'm getting close to ordering my pump/filter and am still debating a little between sand or cartridge, but leaning toward cartridge. I'm looking at the specs on the two larger size cartridge filters, the CCP420 and the CCP520. I realize the 520 has more surface area, but they both have the same flow rates and specs. Here's a link to Pentairs site info.
I'm wondering what is the difference here other than cost and physical size? I'll be pairing whichever filter I use with an Intelliflo pump for a ~33K gallon pool.