It wont hurt but IMHO if you are going to burn the power, just put in another daylight CFL.

More light is always better if the heat can be managed.
Doc 007 Reviewed by Doc 007 on . CFL Lighting Help Hi I am in Vegative growth at the moment, question: Should I use 2 x 115 CFL Blue or should I use 2 x 115 CFL Blue + 1 x 225 CFL Red Rating: 5