Quote Originally Posted by Argentra View Post
Ah, a good point. WHERE are you placing the end of the gun when you take readings? If you hover it in the air, you're getting the ambient air reading. To get an accurate reading of the warm and cool spot temps, you have to pretty much touch the end of the gun to the floor of the tub.
temp guns do not measure air temp they only measure surface temps!

if those tubs are not covered somewhat on the sides and top by some sort of insulator your temps will be low