I have four tortoises (Sulcata, redfoot, leopard and Indian star). They each have their own Turtle shelf. I am going to change out their heat and UV sources soon. I have been looking at Radiant Heat Panels and the compact Fluorescent bulbs. I would like to know if people have been using them and how well they are working. Two shelves are 4x8 feet and 2 are 4x4 feet. Currently, I am using ZooMed fluorescents and Heat emitters. The heat emitters have to go because the shelves are stacked and they are making the shelf on top too hot. Even a low wattage emitter. I appreciate any help on this matter.