I switched over from Baquacil to Chlorine this year and it has been fantastic! Your site has been a great help. I am confused about a few things though. My PH hovers around 7.4. I can add borax and bring it up but it goes back to 7.4 in a couple of days. Also, my CYA has started to climb from 50 to 75. I have been using Tri-Chl tablets in a floater for my normal chlorine and Cal Hypo for shock. My calcium hardness is at 270, my TA seems to stay around 150 and my free chlorine level stays at 5. My pool temperature has been ranging from 84 to 88 degrees. My pool is approximately 13,000 gallon inground.

I keep reading to use bleach to prevent the CYA from rising. I assume the only way to add this is in the liquid bleach form. Do you just add a certain amount per day. With the Tri Chl, I keep around three 3 " tablets in the floater at all times but have no idea what the proper procedure is for bleach. What about Cal Hypo, is that a better alternative?