I need to replace our 20 y/o Purex DE 36 SF filter with a new unit. I have an IG 26,880 pool with a Hayward 1HP single-speed pump. For financial reasons (filing BK soon), I’d like to get the group’s opinion of the Hayward EC65a or 75a. Both are well priced and within our budget. Does anyone have any experience with these in relation to a similar pool setup as mine?