I know this has been discussed before, but just wanted to see if anyone had ideas, as I think I've tried most strategies suggested.
I have an approx 9 month old gunite pool with diamond-brite plaster. There is a flush spa with a continuous spillway (there's really no splash or I think aeration from it, it just runs over the edge and down about 1" to the pool depending on the pool level - sort of a slick look). I run in pool mode all the time (meaning all pool and two spa returns are on but only pool drain is on, to keep spillway moving constantly), about 14 hours a day. The returns are not turned up, and we don't use the spa that often. There is a vacuum that runs every other day, but I don't think it's contributing to aeration. Pool gets a lot of sun.
My PH is constantly rising to 8.0. I have tried low TA (~70) and high TA (~125) and it doesn't seem to matter, although of course the TA gradually drops as I lower the PH over and over. I use a taylor reagent test kit. My Calcium is about 375. At PH of 8.0, I am over the saturation index safe point most of the year here (with water temps over 70 almost all the time and even 90s in summer).
Any suggestions to get off the acid train? I am adding every 2-3 days, using dry acid. When I have adjusted TA, I did it with baking soda.
Many thanks in advance
I have an approx 9 month old gunite pool with diamond-brite plaster. There is a flush spa with a continuous spillway (there's really no splash or I think aeration from it, it just runs over the edge and down about 1" to the pool depending on the pool level - sort of a slick look). I run in pool mode all the time (meaning all pool and two spa returns are on but only pool drain is on, to keep spillway moving constantly), about 14 hours a day. The returns are not turned up, and we don't use the spa that often. There is a vacuum that runs every other day, but I don't think it's contributing to aeration. Pool gets a lot of sun.
My PH is constantly rising to 8.0. I have tried low TA (~70) and high TA (~125) and it doesn't seem to matter, although of course the TA gradually drops as I lower the PH over and over. I use a taylor reagent test kit. My Calcium is about 375. At PH of 8.0, I am over the saturation index safe point most of the year here (with water temps over 70 almost all the time and even 90s in summer).
Any suggestions to get off the acid train? I am adding every 2-3 days, using dry acid. When I have adjusted TA, I did it with baking soda.
Many thanks in advance