JoseHempSeed

regularguy,

you're kidding, right???

if not, then 1 fµcking foot-candle = 1 fµcking lumen per square foot!!!

PERIOD.

whew, now i feel better. sorry for the outburst. let me go back to my gardening now...

Agent86

I agree with Denspot.
Those numbers don't make any sense.

Sorry Regularguy.
But I don't get how the #s can bounce up & down like that.
Please explain.

Thanks.
86.

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wantfreshnuggz

you know the light from HPS/MH and the EVL is good for growing. Now if you went to a store and used the same meter taking the same measurement then you can obviously see the EVL competes with HPS/MH on a level that matters to closet growers. I mean you could use any kind of light measuring device and you'd see that up close the EVL closely puts out the lumens up close that a HPS puts out far away. Josehempseed I agree that they are looking way way too far into this.

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Just for the record, I do not have, have not ever had, and dont plan to have, marijauna growing, or used, in or near my home or any other location familier to me that I may or may not have access to. Any postings I make on any forum's like this one are for purely entertainment purposes. Any pictures that I post have been created by artifcial means from images gathered from, but not limited to, the world wide web. Anything other then this paragraph should not be considered truthful or reality based. -wantfreshnuggz

Alpha

nine pages of posts to decide which lighting is better... how rediculous. each kind of light has it's advantages and it's disadvantages. HID lights put out more light per bulb, but also put out more heat per bulb. which means they must be placed farther away from the plants. EVLs put out less lumens, but don't give off as much heat. therefore, they can be placed much closer to the plants then a HID light. now, it's silly to sit here and debate this as much as it already has been debated. i have an easy (and what i believe to be the correct answer here). they are equally valuble. if you're growing in a medium to large sized area, HID lighting is the way to go... PERIOD. if this weren't true professional growers would all be switching over to EVLs. that kind of leads one to believe that HID lights are better for growing plants. most of us people on HC are not growing to produce mass quantities of bud to supply many people. the people who choose EVLs like the secuirity of being able to grow in a very small space, and seem to be very happy with the results they have gotten. the people growing with HID lights, grow with them because they are the best lights to grow with. hope this helps bring the debate to an end... even though we've kind of gone a stray from the original thread topic

powercow9

Accually I remember when HID's came out.. it took a long time for people to give up their t-8's and t-12 flouros.. It took long discussions on costs and such... It took people like mist and agent86 to bite the bullet and go out and test these new lights and report back their findings. They are expensive and there is more debate to have including total cost of ownership of these bulbs per watt. ie bulb replacement frequency as well as luminal degradation, luminal efficiency, etc.

Lastly if you do a search on the internet for compact flouros, ANSI, Fluorex, Lights of america, Envirolite... You'll find many experienced gardners switching to this type of light (even legal gardners) What made me so interested in the first place was the praise these lights got from experienced HID growers. And one thing I do know about HID's is that although they are expensive it is hard to get rid of them once you see the final product... So I am always deeply impressed when I see a deticated HID grower make the switch for good.

Just a note.. i think that if you do the research.. you'll find that the bulbs in the fluorex are just 65watt 6500k envirolight bulbs... and they only cost $20 they just dont have a 2300k version.

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powercow9

Ok I guess you all know how I feel on lumens and this may have been said before but

Lumens are only the measurement of one wavelength of light... specifically 555nm. WE ignore all other wavelengths including the 470 nm plants like for veggin and the 670nm used for flowering.( you accually get a few lumens from these wavelengths but it is stastically insignificant).

The scientific def of lumen is : 1 watt of energy radiating at 555nm produces 683 lumens.. So with a perfect 555nm wavelength 1000watt bulb would produce 683,000 lumens.. but I doubt you could even germ under this light. In the same breath if you measure the lumens of a 400 watt hps to be 45000 then you are only measuring ~16.5% of the accual light output or rather 65 watts of the light makes the "lumens" while the rest are removed from the equation...I know this is a super generalization.. The percentage is much higher due to the "ease" of making green and yellow light and some of the watts are lost due to luminal effiency and heat but you are still throwing out a lot of light from the equation and the truer the spectrum of the bulb or it's CRI the more light or accual photons get throw out of the equation.. epecially the ones the plants care about.

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Alpha

i really don't care which light is better. HID or EVL? I already have 1 400w MH bulb and 1 400w HPS bulb each lighting a 4' by 3' area. I think the combination of the two lights is better then one light.

question for mist or agent: exactly how close can you get these EVLs to your plants?

Agent86

Hi Alpha:

In answer to your question.


I can get the plant tops to within 1" of the light without any heat stress.
I keep mine 2" away for better coverage though.

Now I've got a question for you.
If you don't care which lights are better because you've already got what you've got.
Then what does this matter.

Later Grow Bro.
86.

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Alpha

i'm was trying to make a point... not very sucessful. there will always be people who argue flos are better then HID lights. personally i think HID lighting is superior to flos. in my opinion, the best lighting system contains both HID lights and flos as a secondary source of light.

my $.02

Agent86

Hi Alpha:

Sorry if I was a jerk earlier.

Here's a pic of how close I keep my lights & I have 2, 95w EVLs in the reflector.

Hope this helps.

Later Grow Bro.
86.

Attached Images

cab with plants day 29.jpg (43.9 KB, 307 views)

__________________
Posting Guidelines ~ Grow Guide ~ Day by Day, Bubbler Grow Guide ~ The Library
Trouble Shooting Guide ~ Educational Pictures ~ Guide to Successful Germination ~ Mite Tea
The only difference between a wise man & a fool, is in the magnitude of his mistakes.
While genius knows it has limits, idiocy is always unbounded.