Welcome to our forum.
I have found that I really like the 104 degree setting. It's now my fave temp. Leaving my tub set at 104, I find that often it's down at 103 and occassionally it gets up to 106. I have a separate "floater" thermometer that I leave in the spa to make sure the temp readout is correct. And it always is. Is this sort of fluctuation fairly typcial?
We even fight over that....he will hit the spa monitor and kick it up a degree
You should never let the water get above 104
It is so interesting how some people are more tolerant of higher temperatures.
I thought I read that the heater (in Jacuzzi) doesn't kick on or off until you have a 2 degree deviation from the set temp.