HPS light distance

F

freddog23

Active Member
Hey guys my plants are in their 3rd node and are streatching. when they were seedlings i had them 3 feet away. now that they are bigger whats an average distance to have them away from a 400w hps?
 
R

reefcouple

Well-Known Member
12" is kinda standard.. Put the light as close as you can, use your hand, if its too warm then raise the light.. The closer the better imo.
 
jondamon

jondamon

Well-Known Member
i have my 600w 15inches from the tops..

i would put it 12 above put your hand palm facing down leave for 60seconds and if the back of your hand isnt burning then you're OK


J
 
researchkitty

researchkitty

Well-Known Member
The reason you are seeing stretching is because your lights are too far away. After the 5th or 6th node is created in veg, you're pretty safe to move the lights as close as heat will tolerate. Generally I'll be 6" away from the plant tops before bed each night, and then adjust them higher/higher each day or two. Good luck!
 
GoldenGanja13

GoldenGanja13

Well-Known Member
I keep my 600 HPS between 12-15 " away. If the leafs look like they are getting light bleached I raise the ights up closer to the 15".
 
F

freddog23

Active Member
thanks guys. i knew that was the reason for steatching, but i had had problems before from heat. but i thing i got it now. appreciate the responces
 
Cali.Grown>408

Cali.Grown>408

Well-Known Member
yea if ur temps are coo then u can put a 400w pretty close to ur plants but i keep mine 10-14inches away from the top of the canopy
 
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