I assumed that when they said that the unit had two 40 watt bulbs that they were "real" watts and not "incandescent equivalent" watts. I can't find this explicitly stated however. Interestingly the aquarium guys don't seem to care about lumens.

Anyway, if it really does have 80 watts, it would be the equivalent of four of the 2' 20 watt fixtures, AND it comes with reflectors, making it quite reasonable in comparison. Still dunno about the various wavelengths tho.
quill Reviewed by quill on . T5 aquarium fixture for small veg cab I have a nice recycled kitchen cabinet which I intend to use to start/veg plants in my small closet setup. It is too narrow (23"x11" footprint) to handle 24" fixtures, but the 18-20" would be perfect. I know that the cheapest solution would be just to buy 2-4 regular light fixtures and stick the appropriate spiral cfls in them, but I ran across Compact Fluorescent Aquarium Lighting: SunPaq Retrofit Kits I am looking at the 20" 40 watt x 2 setup. It comes with two different bulbs, one is a Rating: 5