Ok got lazy and started using hockey pucks to take care of my 17' round pool. I've been trying to raise Ph using Borax but it won't budge. So HMM i said let's check the TA. Did the 25ml mark 2 drops of R7 and with 1st drop of R8 green stuff it turned red instead of green immediately lol. Never had that happen How do I fix it? Put in a 100 lbs Baking soda just kidding! Obviously something is out of whack. Pool has 3.4 of chlorine it's a 52' high round with sand filter Water is crystal clear and 90 degrees here in Pensacola FL
Dan
Dan