+2 on the thermostat. UTHs are not meant to raise ambient temps, and the floor temps you are running it at can burn him severely. I live in MA, and in the winter I use either a CHE or a low wattage lamp on dimmers in order to raise needed ambient temps. I read temps with my temp gun (on the surfaces) and with digital thermometers. I suggest getting a smaller tank honestly...since you are using a high wattage CHE and a UTH on full blast, both of which are very dangerous. How are you reading these temps?