So admitting my mistake of too small of a filter I'm asking for help on what brand to buy. The 400 square foot range is what I'm looking at probably Ebay or Amazon.
There appears to basically Pentair, Hayward and Sta-Rite.
Any advice on the quality...long term life and cartridge replacement cost?
Ex.

THX
There appears to basically Pentair, Hayward and Sta-Rite.
Any advice on the quality...long term life and cartridge replacement cost?
Ex.

THX