Just fired up the Aqua Rite turbo cell and set it to 50%. PB added salt 3 weeks ago. Last week, readings were 3800; Monday it was 3700 - took 2 samples to 2 different Leslies and PB checked it Monday - he used a Goldline electronic tester. Leslies used electronic testors too with the digital readout.
Readout on the Aqua Logic keypad said salt at 2800ppm. Why so much difference?