I am somewhat confused about the recommended TF balance for a plaster pool w/ SWG and the resulting CSI values. My current test results are as follows;
Temp- 81 deg.
I know I'm slightly on the high side with my CH values but it is not significantly high and will come back down if it ever rains again here in Houston. I lowered my Ta to 60 recently to try and help stabilize the pH which has done. But now I have these rather high negative CSI values. If I lower the CH it only gets worse, but I would be within the recommended balance for a plaster pool with SWG. I do not want to etch my plaster and it seems I would be better to let my pH rise up to 7.8 to 7.9 and I would be at a more conservative balance. Am I interpreting the Pool Calculator correctly or am I missing something here? It also seems I would be better off to let the TA rise to about 80 and live with the fluctuating pH which is what I have done in the past. It just takes alot of MA to keep the pH below 8.0. I apprereciate your advice and thoughts.
Note- I'm letting the borate levels dilute due to our dog Gator, who loves to swim with us.