I really have no clue where to put this, but Everything Else seems like a good place.
How much heat does a spa hold if it's at 102-104*F? My spa is connected to the pool and I'm wondering if I empty all the hot water into the spa into the pool how many degrees the pool will rise? The pool is aprox. 4000 gallons and the spa is about 350. If you need any other info, just ask.