as long as the bulbs are not hot then it should be the same as a CFL in respect to the plants being able to touch the bulbs. I personally would cover the open area where the bulb is with a mesh so the plants dont grow into an area that can cause a fire. Just monitor the plants the closer they get to the light, just in case they do decide to burn.

GG23:jointsmile:
GrowinGreen23 Reviewed by GrowinGreen23 on . Never Too Much Light Situation: I have a few 400wt hps in my flower room. They are enclosed and cooled. A person can touch the glass and are moderately warm to the touch. Question: As long as there is no heat coming off of the glass, is it safe to let the ladies grow right up to the glass? This would put them roughly 4inches away from the actual bulb where they'll be getting a wonderful amount of light, cool to the touch even. I had read in Jorge's book that you can never have too much light. In my Rating: 5