Ok, thanks again for the replies. As requested I took a total set of tests and here are the results:

Akalinity 225ppm (I've added a total of about 5 gallons of muriatic acid of the past month!)

Free CL - 1.0 ppm

Combined CL - No color change so zero?

PH - 7.1, doing a Base Demand test took 5 drops R-0006 to bring it to a 7.4.

Calcium Hardness - 50 ppm

CYA - 38 ppm

And from these numbers a SI of about -0.8 - 1.0 (I'm actually measuring water temp right now, my guess is somewhere around 65degF, its awful cold!)

Paul