Have an inground 20x40 pool. 4 ft shallow and 9 ft deep. I have 3 returns, 1 on each opposite corners of each other, one I middle by the skimmer. Also have floor skimmer in deep end.
Currently my deep end is foggy. Can see bottom in shallow end. Just took test strip. Reading as follows. Free chlorine is zero, ph is 7.8, total alkalinity is 120, and cyanuric acid is 70. I have sand filter. Any ideas on what to do next
Currently my deep end is foggy. Can see bottom in shallow end. Just took test strip. Reading as follows. Free chlorine is zero, ph is 7.8, total alkalinity is 120, and cyanuric acid is 70. I have sand filter. Any ideas on what to do next