Thanks for the great link on the borate experiment. We are moving the ph, but not as much as I had hoped. (30 drops of base demand now puts me at 7.2).

Once I get the ph in measurable range, is the next step TA? And should I keep it around 80 like the borate experiment? Also, I will retest the CYA, but I am sure it will be over 100. If so, I need to use the CYA/alkilinity equation, right?

Advice appreciated because I do not want to over do one thing trying to correct the other.

They know that their liner is probably toast. I actually think it was pretty dead when they moved in. The previous owners have been running a very clear/high chlorine acid bath for some time. They never used the pool so they only cared if it was clear.