how far should my light be away from plant

DubRules

DubRules

Well-Known Member
12-18".
put your hand on top of your plant and hold it there for a few minutes.
if your hand gets hot, it's too close.
 
KaleoXxX

KaleoXxX

Well-Known Member
DubRules said:
12-18".
put your hand on top of your plant and hold it there for a few minutes.
if your hand gets hot, it's too close.
Click to expand...
i was gonna say, do the hand test, but this dude beat me to it.

if you put your hand at the top of the plant and can fell the warmth, but not heat, of the light, your at a good distance
 
Johnnyorganic

Johnnyorganic

Well-Known Member
HPS can produce intense heat especially in an enclosed space with mylar. Akin to an Easy-Bake oven failing proper ventilation.

The back of the hand test is a very good indicator but definitely no closer than 18".

Good luck and good growing.
 
H

hershy62

Member
How high should i keep my t-5s from my veg plants thanks for any info right now they are 12 inches and dont seem to be growing fast enough
 
jawbrodt

jawbrodt

Well-Known Member
^Man, bring those lights down, as close as possible without touching the plants. At 12", the output reaching the plants is VERY low. I have a light meter, and anything more than 6" is almost useless.(like 1000 lumens) I try to keep mine within 1" which is tricky because they grow really fast and I have to watch so they don't grow into the bulbs. On a good day, i have to move the bulbs twice because they are growing so well. :)
 
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