He said that he thinks "brightness" combined with heat is what is important, NOT UV.

Mark,

As you probably know, I have been pushing this concept for several years now, although not on this forum since I don't keep monitors. I have long felt that light intensity is a critical issue for lizards.

A couple of important points, however:

1) When most people thing of brightness they are thinking of visible light. As it applies to lizards, there are some spectra of UV light that are visible, although these are not the wavelengths "pushed" on us by reptile lighting manufacturers.

2) Keepers cannot forget the importance of the inverse square law and the non-linear relationship between wattage and light intensity (and heat for that matter). In other words, a low wattage bulb likely provides A LOT more "brightness" to the lizard than a higher wattage bulb that has to be placed further away due to safety and/or heat concerns.
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Current snakes:

0.0.1 Gonyosoma oxycephala - Java locale (green)

1.2 Gonyosoma oxycephala - Jave local (green)

2.2 Gonyosoma janseni - Seleyar locale (all black)

1.2 Gonyosoma janseni - Celebes locale (Black & Tan)

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