bats said:
Ok so if do a 1 minute backwash once a week and the kids use it a couple of time a week i should be able to test my cya every 5 or 6 weeks.I'll be starting with 70 cya so i shouln't run out of it in less than my estimated 5 or 6 weeks?
Thanks
Are all cya stabalizers the same thing.
You really ought to get your own test kit. And then, you'll be having so much fun playing junior scientist, that you'll check it every week. Until you are convinced it isn't changing. Or you run out of reagent, whichever comes first.
I wouldn't trust the pool store numbers.
And no, not all stabilizers are the same. Some sneak in copper or inert ingredients. I have no shortage of CYA in my pool, so I've never had to buy any; I need to get rid of some, which isn't easy with water restrictions in place. But that's another story...
Give it a day or so and someone else will have an answer about which stabilizer to buy. In the mean time, brew up a pot of coffee and settle in for a night of fascinating reading in
Pool School.