1ft 400w

f1bud

f1bud

Active Member
as long as ur hand dont burn when u place them above the canopy then it shudnt burn ur plants and also as long as ur temps stay below 85 then i cant see u having probs !
 
massah

massah

Well-Known Member
1' away with a 400 is a little close...but you have a cooltube so you should be ok as long as the temp stays down
 
Gastanker

Gastanker

Well-Known Member
12" is pretty ideal for a 400w. As long as there are no signs of heat stress you can get it pretty close.

Here's my 600w 5-6" from the tops of my plants -

 
jaydiesle

jaydiesle

Active Member
thanks for all the help i just droped it cuz they were stretching wen i touch the glass it doesnt burn it just feels a lil worm
 
asaph

asaph

Well-Known Member
use the hand above the plants test
and keep your temps no more than 85
30 cm for air cooled HPS should be ok
 
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