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I have a small 172 gal spa..its 110volt and it heats up at the rate of 2degs/per hour..if you have a voltage meter handy..check the voltage to your heater...

Hello all, i live in South Florida and have purchased a small 176 gal spa...works great...I am looking at putting together a solar heater for the unit....i am fairly mechanically inclined, can anyone point me in the right direction, I would like to mount the panel or panels on the roof, and i do not understand how the pumping would work, my unit uses the circulating pump for the high volume jets as well, so i guess I will have to get and install some kind of recirculating pump as well.. thanks from a newbie for any input Gordon