Yes the salt test is the issue have been looking for a good one for a while and I have heard good things about the taylor salt test. My SWG has an indicator on it that tells me when it is too high but not the actual level. Seems every year the pool shop manages to get the over level light to come on by having me add too much salt but by how much I have no idea. The salt cell specifically tells you not to have the salt too high so then guess what I have to buy a new cell win win for the shop..