I have the TF100 testing kit. It does not have a test for salt level.
I'd like to add salt to the pool to increase the "softness" of the water.
I was thinking about taking water samples to two pool stores to get the average, finding the mean and then adding the appropriate level of pool salt to the pool.
I have two questions. First, does this seem reasonable? Second, after adding salt this swimming season does the level of salt decrease, increase or stay steady with time?