Light table on a student budget

[ceropegia]

Since I've been wanting to try out some new orchid species lately (I'm a beginner with 3 phals) I was thinking of constructing a lighting table out of a shelving unit of some kind so I can try some different species.

I'm a student on a budget though, so I was wondering if anyone had some ideas for me? I'm not using HIDs (too expensive and too clunky for now) but I was thinking 4' T12 flourescent fixtures would be a good option.

As for the shelving unit itself, I would like something that is perhaps collapsible (not a solid shelf but something I can take apart since I move around quite a bit) and that can stand up to high humidity (I can finish a wooden shelf easily). I want to rig the fixtures on the bottom of each shelf, so it would have to be about 4' or so.


Anyone have some suggestions? Thanks!