Dropping TA, for the workin man or woman....

[chem geek]

You are most definitely going to need to get your Calcium Hardness (CH) higher. You can use The Pool Calculator to calculate the saturation index which you want closer to zero. If it's too negative, then your pool surface will have a tendency to dissolve into the water; if it's too positive, then there will be a tendency for scaling to occur.

[dhanger]

Yeah, I've already done that, I was just reporting the fill water numbers. Currently the pool is at 190.

Dan