Thank you for your replies. I have done, and will continue to do, as you suggest. It has noticeably cleared up. You are right--it is our fault that we got in this situation. Didn't maintain the proper level of chlorine then heated the pool for a couple weeks for early-season swims. Now we're paying the price, and have learned our lesson. :-/ I really appreciate your detailed responses on how to correct it.

This is our first saltwater pool and we're not really sure how to maintain it properly. The previous owner just told us to dump some salt in it when the readings were low and to backwash/clean the filters. We haven't been testing any chemical levels at all, other than looking at the readings on the control panel. I looked at the manuals but they were no help. I will look around the internet and see if I can find some good basic info on what all should be done on a regular basis.

Susan