i have a 600w in a 3 x 3. i bought the glass, the fittings, the duct the outake fan. hooked it all up. my room was TO cold. so now i have the duct hanging in the top corner, detached from the light, with the fan running 24/7.i also have 2 mounted desk fans that come on with the light. the glass is still on. my light is 20" above my tallest plant. the temp is just right.

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i'm the guy i've always wanted to be

very nice, i have the same problem during the winter but in the summer im fine, thats a good way about doing it, i went out and got a Heater to heat the room every 15-30... i should of just removed the glass.. meh too late :P

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So if you're a fighter
and scrappin' a lot,
You'd best shy away
if you're scrappin' a Scot.
Wi' one fuckin' blow
yer head will be squished,
Then he'll let his scottie dog
lick the blood from his fist...

leave the glass remove the duct.

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i'm the guy i've always wanted to be

"my light is 20" above my tallest plant. the temp is just right"
Dude, thats pretty far away.

20" for a 600w is about right. in a 3x3 with mylar on 3 walls. i could be wrong.

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i'm the guy i've always wanted to be

fuckin' stoner i am. i'm wrong. 20" from my smallest plant.it's about 6" from the tallest.

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i'm the guy i've always wanted to be

still really high but wait a minute. BULLSHIT!!!!!!!!! where do you get your info?

IN FACT WHERE DO ALL OF YOU GET YOUR INFO?

everyone seems to really be on the jump to correct and condemn people lately. sorry video you just happen to be the last straw.


i just got off my lazy ass again. i went outside to my room. my light is 20" above my garden. i rotate plants so some are short some are tall but i use blocks to get them somewhat even. the heights vary about 8" from the shortest to tallest.

when i hold a tape measure from the corner of the hood to the outside corner of my tallest plant it is 20". that is a diagonal measurement. but if you sweep an arch down and in................

i went thru a few books i have laying around this is EVERYTHING i know and the recommended height from plant to light for a 600w is 20 - 24". it can be placed closer if venting is used. i'm not using my venting. i need the heat.

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i'm the guy i've always wanted to be

Dude, dont get your panties in an uproar. I was not trying to jump down your ass at all, nor was I condemming you.

I was however trying to be an assest to this community and offer some help to a fellow grower, thats all.

While 20 inches is okay, you can get alot closer, and the tendency is to get as close as possible for light penetration.
(as long as heat is not a problem)

Here is the reference for my opinion, feel free to use it, the source of this light chart is cannabis culture magazine. (giving credit to the author)

I appreciate everyone who took the time to reply.

Good luck Billy! Keep us posted as to your progress.