I have a fiberglass pool, 9000 gallons. Water balancing has always been tricky. Chlorine will read 1 or zero most of the time, unless I've just shocked the pool. Last week I went through 9 three inch tabs of chlorine in my Heyward Inline Cholorinator, and after shocking I still have a low chlorine reading of only a .5. (I have even added a gallon of stabilizer as directed by Leslie's new water analysis system, but to no avail).
I have had a high alaklinity reading of 18 ppm, so dry acid has been added. This morning the reading for alkalinity is now at 4.6 and the ph is at 6.5. I have just added 2 pounds of soda ash.
All of this to information to ask, "Could the high alkalinity level be neuteralizing the chlorine?"
Anyone have any insight?