I recently bought my house and am still learning about maintaining the pool. In particular I am having an issue with the chlorinator. It is giving me a considerably lower salt reading than what I have been told it is at two different pool stores. They have told me my levels are at 3200 while the cell is reading much lower. I did notice while playing with it today that my salt reading jumped up to it's true level when I turned on the second pump for the spa jets. Is it possible that there is too low flow going through the cell without the second pump on to get an accurate reading? There is what I believe is a check valve right before the flow meter and cell, could this be sticking and not allowing proper flow?
My system is an Aqua Logic AQL-P-4, The cell is a T-15 (pool is approx. 26,000 gallons),