Ive added 6 bags of solar salt 40lbs each to 15000 gallon pool. It's been about 24 hours and getting different results each time I've tested. Which test should I rely on?
Test 1 - digital meter test at pool store said 2400 ppm
Test 2 - aqua chek strip says 2020 ppm
Test 3 - swg control board says 2900 ppm (turned unit on and pressed diagnostics button 5x)