So for the past few month i've been crankin' along at what i established was the right number for my cell at 40% to keep me in the right zone - we had a big party Memorial Day (especially for my pool size) and woke up to pretty much 1-2ppm even after i pre-loaded with chlorine to 7-8 to bump it up in anticipation. i added bleach to get it back to where it needed to be and kept rechecking assuming it would still be digesting the party for a couple days. fast forward to now, and it just slowly lowers itself more than it did before - i bumped it up to 50%...still wasn't enough - now im at 60% weather hasn't warmed all THAT much (although its 100 today) - but thats what worries me, this cell should really be putting out more than enough at that level in my opinion. is the next step to do an OCLT to make sure theres really nothing crazy going on?
My numbers are right on the money by the way other than a little low in CYA.