I know, I know - I can figure this out myself in Pool School (and I promise, I will read it later tonight), but I need a quick answer.
I've been using bleach for sanitizing. I'm not around my pool daily - maybe every three days or so - mostly weekends. When the season started I bought 20 or 30 bottles of bleach and was putting bleach in every weekend after swimming (2 or 3 bottles, typically). I'd test once or twice a week and chlorine levels seemed to hold up / slowly dissapate between "shock"-ings.
Long story short - we had a storm mid-summer where a bunch of new water was introduced into my pool and a bunch of "good" water was presumably mixed/replaced. I used up the CYA testing solution the first time after fixing that and added some stabilizer in a quick response. Didn't add much (two sockfull?) and there was some form of research/calculation behind what I added, but I don't remember enough right now to tell you where I was and where I was going with it.
Pool is clear. PH is perfect. Have not tested alkalinity lately, but I did after the "event" and it was within good range. Thing is, since that time my pool will not hold three gallons of chlorine for more than a day or two. I've been going through chlorine like crazy. Figured this has something to do with (a) stabilizer level being "off" and/or (b) inconsistent shocking schedule / need for schedule normalization, but haven't really had time to figure it out. We've been swimming all summer, things are fine.
Today I finally got my stabilizer testing solution from the pool store at lunch so I can check the cya level tonight.
What am I looking for here? What CYA level do I want and how should my bleaching schedule look once everything is working correctly? Thoughts?