Hello everyone, I am planning on buying three 36x24x18 pvc cages for my three reptiles. I am choosing to use 40watt radiant heat panels on all three and I don't know which is the best thermostat to use to control my temperature. I don't want to spend hundreds of dollars but I am new to using a thermostat. Any help would be appreciated. The three tanks are for a bearded dragon, rosy boa and a sand boa. For the sand boa I might opt for a smaller cage due to the snake being smaller than the rosy and beardie.