well..in short. Yes, for red spectrum. It's a 100w bulb. For Flowering (in my last grow) i used a number of incandescent lights for the red spectrum. my main problem was heat...this grow, i'm thinking of going with red spectrum CFL's.

It was just filling an empty light socket but now it's coming on with the rest of the lights because i'm down to 14/10.
once i'm in 12/12 i'll add some more to make do.