I have a BlueWorks SWG system (replaced a Hayward. I have a BW cell - that I think is going bad. I have a Hayward cell that I think is good (several years old), and also have a ChlorWorks cell. All are giving me different salt readings. Leslie's says 2800. The BW is saying 2100 - low and will not generate CL. The Hayward is saying 5100 - too high, but still generating. The CW is saying 6100 - too high, but still generating. I don't know what "truth" is, but I suspect I should trust Leslies as the baseline. Anyone know of a way to calibrate a SWG so that it will read the baseline?