Recommended Plant to light distance

faded4life

faded4life

Active Member
I'm running a 600w HPS light in a 4' x 3' foot enclosed & ventilated setup. What's the recommended distance from the light to the top of the plants? I know they can resist some heat but don't want to burn the tops.
 
auldone

auldone

Well-Known Member
Not sure for a 600 but I run a 250 and I have read that it should be 8-12" away. I keep it at 10"
 
bloomfields

bloomfields

Active Member
faded4life said:
I'm running a 600w HPS light in a 4' x 3' foot enclosed & ventilated setup. What's the recommended distance from the light to the top of the plants? I know they can resist some heat but don't want to burn the tops.
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depending on your reflector as follows............... vertical (umbrella hood) 1 foot - 600w
horizontal 1.5ft 600w
this is bang on ...good luck
 
thexception

thexception

Well-Known Member
easiest guage is your hand, if it is too hot & uncomfortable to hold your hand under the light, at the distance it is away from the tops of your ladies, then it is too hot or uncomfortable for them.
 
bloomfields

bloomfields

Active Member
thexception said:
easiest guage is your hand, if it is too hot & uncomfortable to hold your hand under the light, at the distance it is away from the tops of your ladies, then it is too hot or uncomfortable for them.
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untrue and not a good gauge, i am a chef and my hands can take high temps ........ping!
 
GodSlave

GodSlave

Active Member
When I ran a 600, I kept it around 12". BUT, if you air cool your reflector or put fans blowing on the canopy, they can take a bit more.
GS:leaf:
 
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