I can't remember what you call the part, but when you look through the clear tube there is white (calcium?) buildup inside on the far right and a little big of green on the big copper looking things that you can pull out. (well, nobody can say that I'm too technical can they? ) I saw muriatic acid recommended on this site a long time ago, and I was able to clear that out before. Would somebody remind me if it was straight ma, or is it 1/2 pool water and 1/2 muriatic acid, or...? I tried the vinegar, but it sat for an hour and didn't do anything.
I need to do something because my FC is dropping because the SWG just beeps and reads "low salt" like it did before. Thanks for your help.