On a couple cages I have a fixture that has a Reptisun 5.0 UVB tube and a simple plant grow tube, and another fixture with a simple incandescent tungsten household 40 or 60watt bulb. On other cages I've got only a ReptiGlo 5.0 or Reptisun 5.0 tube, no extra light for plants, and the same 40-60watt bulb. On the non-breeding females the heat bulb is only 20watts.