Hi all! New here so a big hello to everyone. I have just recently got a 75 Gallon (48"x18"x21") Wooden Vivarium, which I'm looking to use for either a couple of Leopard Gecko's or a Bearded Dragon. But I'm not to sure what size heat mat I would need to put under the Vivarium, would be very grateful if anyone could help. To be honest I will probably get a couple Leopard Gecko's as I just jumped on the wagon of looking after Reptiles and believe they are recommended as a Beginner Reptile. Also, what other Heat sources would be useful to keep the recommended Temperatures for Leopard Gecko's in the Vivarium I have. Kind regards.