As with many I've been a lurker and convert to the "trouble-free" method for several years. I'd like to say thank you for all the knowledge and savings I've pulled off this site.
I've recently developed a pressure variation on the system that has me puzzled. The pressure on the DE filter has been a consistent 29-30 pounds during run time. As of the last several days, it now cycles from 22-28 pounds during the run time cycle. I back-washed the filter and re-added DE with not change. My thoughts were that it may have to do with the in-ground cleaner, but the cycles are not in sync with the rotations of the zone-control valve. I also thought maybe I had a tear in a filter panel, but the pool is very clear and the filter seems to be doing its job. Any thoughts and suggestions as to where to look next?
If this is the wrong place for the question, let me know and I'll post again in another location.