Reduced Temperature and Bromine


New member
Nov 14, 2014
If I want to turn down the temperature if my hot tub isn't going to be used for a few days, how low can I go? Ive heard that below 85F the bromine no longer works. If I only use it once a week, do I have to do anything different with using the bromine tablets if I want to turn it down between uses?


TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
Silver Spring, MD
Bromine is just fine at cooler temperatures. If you are using bromine tablets, they will dissolve more slowly at the lower temperatures, so you may need to use two or three at a time, but they will last longer so it won't use any more in total than you were using before.