Been running BBB for a few weeks now. The pool is awesome, crystal clear. Unbelievably better than Baq was. So, my only question is with CYA. According to my test kit I'm at 20ppm's. It seems like I've put in alot of CYA/stabilizer but maybe not seeing I'm still new at this. It's been a week since I last put some in but I don't want to over do it. I'm almost out of reagent from testing it multiple times. The poolcalculator says add 40oz to get to 40, I guess that's my next step. So can I buy more re-agent? My test kit is full otherwise.