Hehe.
Yep....my water turned cloudy too.
had a soak on Monday night and forgot to put the bromine floater back into the tub after.
Tuesday night was a windstorm, and below freezing temps....didn't soak....woke up Wednesday morning to see cover had blown off, and water level was down about 3 inches......SWMBO closed to cover......went to soak last night.....water was cloudy, and brom level was 0....hmmm.....where's the floater? oops.
added a pinch of brom concentrate, and jumped in anyway........after getting out, went to top up tuib and discovered the hose was frozen......pulling it off the reel, it cracked in about 10 places, but just the outer sheathe, so it still heald water......BUT water was frozen inside.......so the whole hose goes in the tub, close cover for 5 minutes.......pulled the softened hose out, topped up the water, threw in the floater and 2 oz of brom concentrate....turned all pumps/jets and blower on for 30 minutes, then turned them off, closed cover, and hoping for the best tonight.