Crystal clear pool!!! Thanks experts. CYA 40, FC 4-6. Easy to maintain. Haven't added anything since the water replacement. No nothing, but calhypo tabs. pH has been in the 7.4-7.5 range. CH 250. TA 50. Seems low, so I add 40# baking soda (over 4 days). Now TA 80, but pH has risen steadily to this am's 7.8.
What could be causing this? I don't want it to go higher and it's been 3 days since the baking soda treatment.