Hello all, I'm new to the forum. This site is awesome and I've learned a lot and continue to every time I log onto it. My problem is that I've been trying to SLAM my pool with very little luck. Currently, I can't personally check the CYA level. According to the pool store, my CYA was 45, but we've since added about 700 gal and it has rained a little for the last couple of days. I understand that the CYA will drop with water addition, but didn't think 700 gal would drop it so low that the sun would cook it all off. Am I mistaken? Water is crystal clear!! I've added bleach, according to PoolMath, several times but the Cl is always very low after letting it circulate. I SLAMed it yesterday afternoon. It circulated for 13-14 hours, while I was at work. I checked it this morning when I got home from work, and my FC was about a 2, so I SLAMed it again. Checked it about 7 hrs later and again, my FC was about a 2. SLAMed it again before leaving for work and threw the floater back in to try and help increase CYA. I had my wife check it again about 6 hrs later, and lo and behold.......FC is a 2 again. CC is 0. I'm waiting on my TF-100 kit to arrive this week, but currently have to "trust" the late teen, early 20's pool store "professional" to run my CYA. So far 3 gals of 6% bleach and about 3 1/2 gal of 10% bleach used. What am I doing wrong?! Thanks in advance!
pH 7.5 (in the process of aerating to lower TA)
CYA ?? was 45 on Saturday before 700 gal water addition and a couple of light rains