I am unable to measure CYA right now and do not trust the store results. I think I have almost no CYA and cannot tell for sure till I order the reagent. Here gos my question. No matter how much bleach I add I always come back to a measurement of about 1.5 FC and hovers there. Would this happen if I had low or no CYA ? It never seems to want to stay about 4 FC and that is where (I think anyway) it should be if I was at a 40 CYA. Even if I forget to add Bleach one day (and I have more than once) it always seems to be at 1.5 FC..Thanks !!