I have two glass aquariums. Both are turned on their sides so they measure 1. 21d x 48l x 12h and 2. 18d x 36l x 12h. (It's what I had available at the time. Will be moving to Animals Plastics when I have the funds) I have both tanks outside insulted to reduce heat loss. I have ZooMed heat mats mounted under the tanks with night heating bulbs on the same side. This is "suppose to be the warm side but I'm only able to get a max temp of 80. On the cool sides it is running 75. I know this is way too cool. The heating mats aren't transferring enough heat through the substrate. The small cage has aspen shaving and the large I'm using bark. I have a 300 dollar heat thermometer gun I'm using to check temps so I know the temps are accurate. I will spend whatever I have to...to make sure the temps are right (within reason of course). Please help! Thanks in advance for any help!

April