Your frog is albino so i wouldnt recommend useing the day light blue bulb, it may be to bright for him. I use a 5 watt led from walmart with my albino and before that i just used the room light because it lit up the whole tank. I started useing the led just for my viewing pretty much. If your going to use a matt on the bottom i wouldnt use it during the day as suggested and just maybe say at night when hes above ground. They burrow to get cool not warm, and any heat the ground retains when the sun goes down doesn't last that long and the sun doesnt actually heat up underneath the top layer of soil or dirt that much. There is actually a very big difference in temp from the top to just an inch or so down. Im not saying dont use it if need be its just not the best option. I went out side about 20 mins ago to conduct a little experiment and here is the pics. Right now were i live it is 32C and feels like almost 40 with the humidity, so thats 89.6F and 104F with the humidity. So i went outside with my infrared thermometer and checked what the temp of the ground was right out in the sun and then dug a hole directly under were i took the first reading and took it again, you would be amazed the difference. I also only dug about an inch and a half were as a pacman would burrow further down then that more then likely. And this was right out the in the dead of heat like mentioned and they would rather be in a shaded area if possible which wouldnt be alot but would be a couple degrees difference.