I've had mine sitting outside for about two hours now and the water isn't even boiling. I've just been using a laser thermometer to check temps. Water is 202-210 and the inside of the walls are any where from 170-202. Lava rocks are 450ish, heating element is over 600. Would I be getting a more accurate reading with an ambient thermometer? I'm under the impression that the water should be boiling.