I vacuumed pool this morning and then afterwards the flow was not turning on. I turned pool off open basket cleaned anything out (there wasn't anything) then put everything back and turned pool back on. Flow worked again but it just seemed a little weaker (I think). I tested water no all chemicals fine. But now saltron says low salt with "LO" blinking and the chlorine (I think) coming out of the saltron retro (it looks like a little cloud). I've seen the cloud thing before but now it's been producing it for about a 1/2 hour. The temp now is 81 (I know that in the past the reader said salt low because of low temperature). I'm just concerned now and probably stressing. My above ground pool is 12x20 and 4 ft deep (5,500 gallons). Should I stress?