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    SI is not just about scaling

    " he had a digatal salt meter that showed the salt level to be 3400ppm, my test showed 3600ppm, the ic40 showed 2300ppm." With my math above will show this being correct " Btw the water was 64 deg" - will make the cell read lower then norm. "all summer (78 / 87) the ic40 has read from 500 to...
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    Im confused about liners

    Hey there, I will try to post pics soon if i can but i am confused. I have a 18x33 garden leisure pool. The liner is confusing the heck out of me. I can not keep it in its tracks to save my life. I notice it was a few inches off on one side (pool level) but i told myself i deal with it later...