Quote Originally Posted by khyberkitsune
Well, not entirely. The incandescent would work, but given the output spectrum (with a typical peak hitting around 630nm,) the typical tungsten-filament lamp would be more usable during flowering than during vegetative phases, and the relatively low radiometric output levels of the proper wavelengths would cause stretching or fluffier buds.

Really I'd look into targeted-spectrum CCFL lighting for the case. It's low-heat, high-output, and they do make it in basic dual-band (but since a CCFL is a fluorescent tube, there's plenty of trace peaks across the entire visible range) so I'd be willing to bet it could be done much better than a CFL. Might be a little costly but I'm not entirely sure about that either. I've been dying to build one using the new CCFL tech.
exactly. useless energy