I am considering having my pool RO filtered instead of draining and filling. My reasons are a CH level over 1500 and salt level (as measured by pool store tests) of about 7000. I have been using liquid chlorine for about 3 yrs and our fill water here in east Mesa, AZ is extremely hard. Our temperatures are hovering at the 90-100 degree range so to get things back to respectable levels, I would have to do a bunch of partial drains and backwashes. The RO service is pricey but should solve my problem. Anyone have experience with the RO filtering?