I just received my TF100 kit yesterday and performed the tests today, here are the results:
Fill Water CH: 260
Now I know that the CH is very high and that in order to lower it I need to drain about 90% of my water. I also realize that my CSI is prone to scaling in its present condition. Is it acceptable to lower my FC to 3, PH to 7.5, and TA to 80 which would give me a CSI of 0 with the CH still at 700? If so I will start the 7.0 PH and aeration cycle until the TA is at 80. By the way my water is very clear with no cloudiness at all.
I do have what I believe to be some light scaling on the plaster walls. I read on another site that I could lower the PH to 6.0 temporarily combined with brushing to remove the scaling. Is this an acceptable method to remove scaling and if so how long should I leave the PH at 6? If not what is the easiest way to remove scaling from plaster other that hiring someone to drain and acid wash the pool.
Thanks for the help, I think I am starting to get my head wrapped around the chemistry as a new pool owner.