Mh lighting question?

[bluecraze08]

my buddy and I are gonna be growing about 4-5 plants in an area about 5 feet by 4 feet and around 6 feet tall. we were wondering if this 400w mh lamp would be good for us? http://www.bghydro.com/BGH/customkit...c=HLMH04SM&eq=

Thanks!

bluecraze08 Reviewed by bluecraze08 on 03-23-2006. Mh lighting question? my buddy and I are gonna be growing about 4-5 plants in an area about 5 feet by 4 feet and around 6 feet tall. we were wondering if this 400w mh lamp would be good for us? http://www.bghydro.com/BGH/customkititems.asp?kc=HLMH04SM&eq= Thanks! Rating: 5

[LIP]

Yeah, it would, but also concider getting a HPS for flowering. Plants need a blue and red spectrum of light. MH has blue, so its great for vegative growth, but HPS has a more red spectrum so you'll deffintaly see the differnce, but you can use a MH all the way through. Good luck.

[Zandor]

You don't have a lot of height to work with, you might be better off with many CFL like BobBong has used and Harddon has used to good success. Save the heat in a space that small and focuse on other issues of growing and not deal with the heat.

[Garden Knowm]

ZANDOR....you used the "C" word.....

now I have seen everything...

should he use miracle grow?

LOL

[snow owl]

6 feet is plent of height. With the light your intending to use, keep plants 2-2.5' in height, as you will expoential loose intensity with every foot away from the light source.

[bluecraze08]

well its about 6 feet 8 inches tall cause im 6'6 and i can stand under it and theres about an inch or 2 above my head...lol..we are just worried about 400w being not enough...is 400w enough or do we need a 1000w???

[FERMENTATION]

Get one of these http://www.specialty-lights.com/901154.html with the EYEHortilux 6500k this MH bulb has the best spectrum I have seen. It has excellent blue with better red than most HPS bulbs (if you disagree put up a spectrum analysis please.) The cool tube will let you grow your plants real close to the bulb too.

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[Zandor]

Ok guys, hope you can deal with the heat then. Look at the cubic feet too I just think that if the plants starts off 12" off the ground and normal 30-45 day veg the plant will be about 3-4' tall plus the 12" to start with. Add some flower time where they stretch and you have a 5'10" plant or so and no room for the light to go up anymore and displace the heat.

I was just thinking about the room above the light to help displace heat is all.

Good luck hope it works out great!!

[Zandor]

GK even I have one or two of those lights. How do you think I light clones or seedlings to start them dude...................man get real..................<snap>:smokin:

[smoknjoe]

I would purchase a 400w HPS ballast, that way you can use a MH conversion bulb for veg, then stick in the HPS bulb for flower. You get the best of both worlds, and only have to buy one ballast.

I would avoid 1000w, as 400w is sufficient for a grow of your size and uses much less electricity. Plus, you might have heat issues with the 1000w.

Height won't be a problem, as long as you don't let them grow 3 feet tall before flowering.