Quote Originally Posted by Swingpure View Post

Is the purpose solely to heat it up to prevent it from freezing, or is it also bacteria prevention of the “sweet” and that is why you need to bring it to a boil?
Gary, I don't think you have to worry about freezing if that's your concern. I allow mine to freeze solid between runs and in 20 years have never had a problem. If a 14,000 gallon pool can freeze solid every winter and not damage the pool, your 10 gallons of frozen sweet in your pan will do no harm.

Bringing your pan to a boil every few days is to prevent bacteria growth. However, if your pan is frozen that's not going to happen anyway. I only bring my pan to a boil every 3rd day or so when the pan DOESN'T freeze between runs.