Seedlings under 600w hps light?????

Kushsomniac

Kushsomniac

New Member
I'm going to be growing 3 plants in fox farm ocean forrest soil under a 600 watt hps light. I'm going to start the seedlings under this light. My question is approximately how high above the seedlings should I hang the light? I'm guessing around 2.5-3 feet. Any suggestions? BTW this will be my first grow.....
 
T

TimDog

Member
Kushsomniac said:
I'm going to be growing 3 plants in fox farm ocean forrest soil under a 600 watt hps light. I'm going to start the seedlings under this light. My question is approximately how high above the seedlings should I hang the light? I'm guessing around 2.5-3 feet. Any suggestions? BTW this will be my first grow.....
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I would use a lot less powerful light than that for seedlings. You're going to fry them. Even if that's all you have and hang the light 5 ft away, the seedlings will stretch terribly.
 
astronautrob

astronautrob

Well-Known Member
Kushsomniac said:
I'm going to be growing 3 plants in fox farm ocean forrest soil under a 600 watt hps light. I'm going to start the seedlings under this light. My question is approximately how high above the seedlings should I hang the light? I'm guessing around 2.5-3 feet. Any suggestions? BTW this will be my first grow.....
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I always use the old trusty hand under the light technique, but really if they're just seedlings I'd dim the ballast as much as I could and probably put it a good 3 feet or so. I use a 400w straight thru and usually just keep it 3-4 feet off my seedlings mostly just for the convenience of being able to work easier in my tent with the light higher up.
 
Igotthe6

Igotthe6

Well-Known Member
You will not fry them. heat is the only issue.They will dry real quick though,watch them. I have started seeds under 1000 watt hps many times with no problem. 2.5 3 foot until 2nd set of real leaves,then lower to 9-15 inches. It is a waste of electricity,I had others in veg when I've done this.
 
D_Urbmon

D_Urbmon

Well-Known Member
I started my last batch of seeds under 600w MH. @ 3 feet away you should be fine and they won't stretch badly at all, nor will they fry.
 
Purge

Purge

Well-Known Member
I suggest using cfl for seedlings.
I just fucked up my whole grow and Im pretty sure this was a lot of the reason.

My plants sit pretty 18inches under a 400w MH.
 
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TimDog

Member
Wow. I only responded because know one had. But in just that short time you got all those reply after mine. Where were they at before?
 
Oregon Gardener

Oregon Gardener

Well-Known Member
TimDog said:
I would use a lot less powerful light than that for seedlings. You're going to fry them. Even if that's all you have and hang the light 5 ft away, the seedlings will stretch terribly.
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Also, that's a lot of money on electricity. Although your 600 turns down, it doesn't go down to 40w.
 

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orbo

orbo

Well-Known Member
The HID light will be awesome for flower. Don't get me wrong, it will work for you right now its just a bit much.

I find that keeping my HID light about 18"-24" works really well. In late flower I might lower it just a little for the main colas just to piss them off and get them to resin up a little extra.
 
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