Thanks Watermom. I entered all that in the form when I registered (actually re-registered from years ago) so I didn't think it was necessary. Please accept my apologies. I've used the Taylor K-2006 since Ben stopped selling his kit. Once my pool went clear my last measurement on the chlorine level was 14 ppm. I added 2 additional gallons, ran it for 2 more days and it was closed (didn't test just prior to closing). I was completing final waste line plumbing, the EasyTouch and the gas connections to the heater. I was too busy vacuuming out all the DE and Algae on the last day.

I don't think it would do me much good to pull a sample now. The low last night was 24. The high today was maybe 40. The pool is totally clear of leaves except what might have snuck under the cover. Cold water holds high chlorine values quite well and tends to stay very clear with little attendance. I'd guess, especially with all of that stabilizer in there.

The last few days prior to closing it was all I could do to keep it clear of leaves. The quicker they're out the fewer contaminants in the water. I usually don't close this late. Right in the meat of the tree shed. I'm surrounded by oaks, hard maples and silver maples.

I'm curious...why open as early as I can? I know I'll likely lose some CYA by next spring, but to bring it down below 100, just don't know. But, what will opening the pool early as possible do for me? To get on top of the values before the water warms?

Thanks...Tom