Quote Originally Posted by dnmilikan
Azo is primarily sensitive to light in the near band UV range. It's peak spectral response occurs at 350nm and drops from there to appr. 460 nm. Most of us use reflector floods which have virtually non existant UV outputs and the output from these lamps that is higher then blue is largely wasted. So your plant light is probably much more efficient.
A "Sunlamp", used for tanning purposes, might be even more efficient. Their reson for being is UV emanation.