A 400 watt HPS would put out a lot more lumens, use less watts, have more penetration, and have more coverage. If that isn't enough reason to get a 400 watt HPS instead I don't know what is
Still a nice design though

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It is NOT enough reason for me, and I will tell you why (in a friendly fashion)

To put out the same amount of lumens the hps would hafta be just short of 8 inches from the plants, where as the cfls would be right on them and still way cheaper to cool, all while providing a BETTER spectrum for flowering. using just 20 more watts (and a ton less money) I can make these plants yield as if they were under a HPS minus the dense buds, but also, i can put some 6500k's in there as a BLUE spectrum brings thc up to full potency (a metal halide in flower will produce less bud than a hps, but better buds cause of the spectrum) here I can have the best of both worlds, and using it for scrog penetration dont mean anything, making this fixture a very very good alternative for small scrogs

I do think HPS is better for commercial grows and anything over 600 watts, but for lower wattage personal grows, CFL's Own

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My Satirical Fictional Grow:http://www.rollitup.org/cfl-growing/...ml#post3190761

well I do slow vegging cause I veg the entire time the other group of plants are in flower, so i give them way less light so that they wont out grow the flower box when the time comes, so I will only be using this for Flowering

I am gonna hard wire it, there will only be one visible wire and that will be the main power cord, If i am gonna do it im gonna do it right

Havent started building it yet, waiting till the next batch go into flower in 6-7 weeks when the current batch finishs

thanks for the bump and the support dude, and yeah, but I could get this thread huge if I entitled it "HPS ARE FAGGY" but im not a militant lol, I love and support my cfl's for small scale personal grows, but would never suggest them for a big commercial grow, i say dont touch the HPS until your flowering room is 5sqf or bigger, and then go to the 600 and forget all about 250's and 400's

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My Satirical Fictional Grow:http://www.rollitup.org/cfl-growing/...ml#post3190761

I'm sorry man but have you ever cooled a 400 watt HPS
What about 400 watts of CFL?
400 watts will put out the same amount of heat regardless of the light
CFL's have the misconception of being cooler because they are usually put all around the plant. That means that 400 watts is scattered over the whole room. A 400 watt HPS has the all that heat coming from one spot that is why some people think it is hotter. Do what you want man you can go ahead and use 20 more watts to get less bud quality and quantity wise

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I measure the ambient heat in the room, and it is much higher with hps, I am running 296w of cfl right now, and its much cooler than my pos 250 hps was

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My Satirical Fictional Grow:http://www.rollitup.org/cfl-growing/...ml#post3190761

How much of difference is it in lumens?

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its about the same cause the lumens from the lamps diminish as you get farther from the plant, and the cfls can be right on the plant, and equal lumens,and cfl has a btter flower spectrum

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My Satirical Fictional Grow:http://www.rollitup.org/cfl-growing/...ml#post3190761

The most lumens I could find that a 42 watt CFL will put out is 2,800: http://www.1000bulbs.com/42-Watt-Compact-Fluorescents/
So 2800 * 10 = 28,000 lumens for your light
Now the LOWEST amount of lumens I could find on a 400 watt HPS is 50,000 lumens: http://www.1000bulbs.com/400-Watt-HPS/

400 watt HPS= 50,000 lumens
420 watts of CFL= 28,000 lumens

Clearly you are making shit up and have no info to back it up. I know what I am talking about and I absolutely without a doubt in my mind know for a fact that a 400 watt HPS will outproduce 420 watts of CFL anyday of the week (using less watts might I add)
You could hang a 400 watt HPS 2.5 feet over the plants and it would still be as bright at canopy level if not brighter than your CFL setup if the CFL setup were right on the tops of the plants
If you are going to try and prove me wrong at least have some facts to back it up not just your stoned guessing

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This is the last response You get as I said earlier this is not a CFL vs HPS thread, I dont Know my shit huh? A 400w hps DOES have 50,000 lumens, oh but we forgot a word, silly us, INITIAL Lumens, there we go, Yeah get that 50,000 lumens, the hps will hafta be less than an inch from the plants, CFL's Initial Lumens is the final number you work with cause you DO keep the lights with in an inch, dont come in my thread and insult my intelligence when you believe that a 400w HPS provides 50,000 Lumens at ANY distance, A 400w HPS puts out like 29,000 Lumens at like 8 Inches from your plant, and most people suggest keeping the light further away than that, which reduces the number even more, Initial Lumens do NOT reach the whole grow room....if you "knew your shit" You would be able to grasp this simple simple concept.

Better really rip into me, and get a good last word in, because this thread is for a fixture, not hps vs cfl, and I said that in the beginning, I refuse to let this thread turn into, or even participate in a stupid flame war over lights, which is what you want obviously, cause instead of using facts and numbers, you use personal attacks, well you do use numbers, the wrong ones, good day

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My Satirical Fictional Grow:http://www.rollitup.org/cfl-growing/...ml#post3190761

Maybe this simple chart will help people figure this out, sorry 29,000 is at 9 inches, not 8 as i had said, but the point remains the same

A Lot of people suggest a hps be about a foot from plants, where you get all of 15,900 lumens ... yay

Looking at this chart you are saying that 2,456 Lumens is better than 28,000

there I provided my proof to back it up

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My Satirical Fictional Grow:http://www.rollitup.org/cfl-growing/...ml#post3190761