Is this for real? I have completely lost almost all CYA twice in one summer. A month ago I did a full test and noticed there was no CYA. I assumed splash out, we have had a lot of activity. I added the necessary amount of HTH stabilizer and got it dialed in. Now 30 days later it has about 5ppm. What gives, why is it dropping so fast? If evaporation is the main reason for water loss which has no effect on CYA how can I lose this much CYA this fast? Is HTH a bad product? Is there another reason for CYA loss? I started the season with 0, and have been back to 0 again 2 times. Confused why I have to spend all this money on CYA. $96 and counting for CYA this year!