Just a few quick questions on sand filters. My older filter will not work correctly anymore, so I'm in need of a new one. Pool is 22,000 gallons, pump is 1hp 2 speed Hayward super pump. Would a 24" Hayward be to large for my needs? Would a 22" be better, and are Hayward filters reliable? You read so many different thoughts on line, so I thought I'd ask those who I trust. Thanks for your help, I'll need to order soon. Denise