bulbs and light: there is a general rule about light you may want to know about called the "inverse square" like this:
if a light gives off 4 foot candles at of light 1 foot, when moved to 2 feet it covers 4 sqaure feet with the same light but now each square foot gets 1 foot canndle. this is mostly about visible light, short wave light (UVA,UVB) is more effected by distance and material than visible light.
so plan ahead, you may want to custom mount some lights, also use 2 different kinds of light. for example a long tube and a Mercury vapor bulb for creating a hot basking area with extra UV.
as for materials.... wood can be ok.
some things to think about:
Cleaning and Water
while a bd is not a "wet" herp you do need to clean up.
you may want to check out the laminate sheets used in making custom counter tops. you can attach it to plywood with standard adhesives for use in bathrooms and the like and have a smooth clean interior that is water proof and easy to clean.
also if you use an off white shade then it will help make the inside "Brighter" by reflecting some of the light.
do make sure to use *NON TOXIC* types of Glue, resin, paint and so forth. if you want to use a wood finish there is a marine grade poly-urithane that you can use, if can give a very good wood finish that will be safe and will not let the wood get mould or fungus. but you must allow plenty of time for vapors to dissipate when any glue, vanrish or other chemicals have been used. often you need to allow 3-5 days for the process of curing to finish. check the product carefully.
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