I guess the only way to be sure is to run an OCLT to make sure that I am not losing FC to anything else. If that comes back ok.....I guess it is what it is. Does pH gradually creep up? I usually have to add 1/2 gal of 8.25% clorox and some acid to balance out every day. Do these numbers seem within reason or is something sinister going on?
Ok I was not counting the last drop, results are unchanged 21 drops last night, 18 drops this morning. 10.5 to 9.0 FC The water looks spectacular, crystal clear. There are always several (30-40) insects (spiders, rolly polly, worms and earwigs) in the bottom of the pool every day. I vacuum them out every other day. Could I be losing FC to those bugs as well? As far as pH is concerned I test before I add chlorine. Very little aeration....one jet that just breaks the surface. I will try and post a pic.