For DE we would recommend a minimum 84 sq. ft. (assuming 30000 gallons). I would revisit the pump choice... again 2-speed, and lower HP. Let us know if you want recommendations.starrock77 said:A 2HP pump is what the PB wrote on our contract. I think the pool is closer to 750 sq ft. It's a single speed pump. The DE filter that you see in the pics is not the correct one. I was told my unit was on back order and they just used another one so that they could install the multiport valve and do all of the plumbing. They will be replacing it with a bigger one at start up. So I do not know the size at this moment.