Well I was able to pick up bleach but the pool store is closed already I guess because it's Sunday. I tried WalMart, Loes and KMart and no one sells just the CYA reagent. I hate to spend the money for the whole kit when all I need is the CYA. I guess I will wait until tomorrow to test for it. For the time being should I put in some bleach just to be safe??? If so how much?