Terrarium lighting question
 

Have a 24" tall terrarium which will hold mostly mini pleurothallids. Should I go with 13 watt or 26 watt screw-in compact fluorescents (x2)? Orchids will be at all levels of the terrarium top to bottom.

Thanks

I think that you may find even 26 watt compact fluorescents to not be enough.

I agree with the 26 watt. I have a few questions though: is that the only light source, or is it supplemental lighting? Is the light coming through a screen, or are the plants directly underneath? Will the lights increase the temps. and decrease the humidity? Those are just a few questions that come to mind.
I grow a most of my minis in terrariums, some with lights, others without. It was the only way to create micro climates in an apartment.