- May 26, 2013
- 19
My TA is at 40, been trying to get it up. I lowered ph with acid twice, then added Baking soda, the first time it came up none, but we had a bunch of rain, the second time it only came up 20. I've been using the pool calculator. I've waited 24 hours between measurements and it should have come up to 80 the second time. What else could be affecting this?