Ok. Will do. Also, got a few more questions:
Yesterday I cut the grass and weedwhacked around the pool perimeter. Even though I use a grass catcher and try to blow grass away from the pool, the trade winds blow grass trimmings into pool and there is no way from preventing almost the entire surface of the pool from being lightly covered with grass. I try to skim off as much as I can but know I don't get it all. Could this be contributing or no big deal?
Is combined chlorine an issue, should I be measuring/tracking? I don't see much reference to it. It's been zero.
I see lots of references in pool school to shocking. And understand that could be bleach but when you say 'shock' it and/or 'continue shocking', what exactly does that mean with regard to how much to add? Or is there a better chemical to use?
As always, thanks for your prompt responses.