Currently have a 60 sq ft DE grid filter that needs replacement. Thinking up getting a 80 or 100 sq ft DE filter. Pump is a 2.5 hp single speed. With old filter, press was abt 26 psi just after replacing DE. Typically in abt 1 month, it would be up to 35 psi. The pressures always seemed high to me and always wondered if the prev owner install the right size filter to begin with.
Are filters sized by the pump or the pool size or both?
Are filters sized by the pump or the pool size or both?