you have a nice light... i would say it doesnt matter and just put it where u feel most comfy...

make sure you take temp readings tho... wherever you decide to put it.
iwantFUEGO Reviewed by iwantFUEGO on . How close should I get? I've had my plant, which is about 11 1/2''- 12'', 18 inches away from my light. My light is a 400w Agrosun Gold Metal Halide. My friend who I purchased the light from told me that 18" is far away for such low watts, and that 18" was for a 1000w system. What shouuld I do? Rating: 5