So the other day one of my friends sold me a really nice, never-out-of-the-box Gro-Pro greenhouse for super cheap. I just built a greenhouse on my porch, so I wanted to use this one inside. My apartment is very dry, especially in the winter, so the vinyl cover is a real godsend for my high-humidity plants, like the Neps. Right now, I have all those plants in terrariums covered with cheap semi-transparent plastic, and I think it cuts into the light. I want to make the greenhouse into a lowlander terrarium.
It's big, about six feet tall and three across, so putting lights above it is pretty much out of the question - they'll have to be mounted inside. That's fine with me, because it means greater lighting efficiency. However, I know that not all lights are safe to use in moist environments. I'll be keeping the terrarium shut to max out the humidity, and I eventually plan to add a fogger, so I want to find lights that are safe to use near the dew point. I know at least a few people here have large tanks or special enclosures (I'm thinking fridges for highland plants) with internal lighting - what do you guys use, or how do you otherwise compensate?
I've already found one (expensive!) fixture that fits incandescents. It's fully sealed with rubber gaskets and made specifically for wet exposure. I'm not sure if I could use a high-power compact fluorescent in it, because it's a sealed glass enclosure and I'm not sure one of those bulbs would fit inside. Could someone with some of those big (30+ watt) CFL bulbs please measure their diameter and length for me, so that I could check them against these fixtures?