I have an Esther Williams 18x33 above ground pool that is partially buried. The pool was installed about 12 years ago. Our Jacuzzi DE filter system needs to be replaced, so I'm researching new ones. The old system seemed to be a bit undersized for the pool, but my research has shown that my 1.5 inch pvc lines to the skimmer and the single return line are going to limit me to about 44 GPM flow, regardless of the pump size. I started wondering if I could increase that limit by installing a second return line, which increases my flow to 70 GPM or so. Being partially buried limits my options to placing a return directly below the existing, or to place it upstream of the skimmer by up to 25 feet.
I'm considering the Hayward Perflex EC50. If I can increase the flow max, I can consider a larger filter/pump such as the EC65 or EC75.
Thank you in advance.