Hi to all and continuing thanks for the information posted here. I even went the borates route last year with great success. The wife loved the "luxurious" look and feel of the water!
Today's quandary is related to the Hayward EC-65 DE filter.
Opened pool (12k gals.) a few weeks ago and got it clear with shock. Then a setback where due to my inattention chlorine went to 0 and major algae bloom. Re-shocked and the algae is under control but the filter is not filtering.
Took the top off the filter and hosed out all the algae and old DE and restarted. Now after "bumping" and starting I get pretty good flow through the filter but it quickly diminishes. It perplexes me that it runs well and then deteriorates. Hard to understand in that I cleaned out all the old DE. Today I regenerated the filter - flush away old DE and recharge but no change. The pump is new. Maybe there is some other clog in the filter but I can't see where it might be.
Any advice much appreciated, Count.