maybee a brilliant discovery ??? (lighting)

is this a good theory???

  • Total voters
    3
maryjane4ever

maryjane4ever

New Member
ok so iv been doing research on LED lights, wavelength, and UV (black) lights....
i came upon something that showed me something pretty different than what iv heard growers say(write)...
so continuing the story, i fell on a diagram of the wavelengths a marijuana plant (which i will attach to this post) and i noticed that the clorophyl a (flowering i believe) has a pretty decent jump arount the 400- 430nm wavelength, so i did some research on lamps with 400nm wavelengths, and guess what..... the only ones i could find were black lights (UV) which are exactly in the 400 nm range, so if we were to grow with leds, the only kind we would need are the ones that are around 450 nm, and i think it could save some money (if the theory is correct) because instead of spending 10$ on 1 watt 665 nm which produce not so great results when you could buy 6 45 watt UV lamps (blacklight) for around 15 to 30 dollars on ebay.

oh and one more thing, even if the 400nm line is lower than the 665nm the compensation of watts would be pretty large, with the blacklights

View attachment 1472205

NOTE: lumens are based on what HUMANS see NOT the PLANT
if anyone were to try out this theory, post some pics + results ;)
 
Mother's Finest

Mother's Finest

Well-Known Member
Ultraviolet light is 10-400nm. Any UV light that puts out most of its light between 400 and 450nm isn't a very good UV light. Imo poor quality lights should be avoided.

Only using the chlorophyll b reduces the amount of energy the plant absorbs by as much as half. That graph is online in a few different formats and only compares two test plants, neither of which is marijuana. Most other graphs depict a slightly more even ratio of Chlorophyll a to b usage.

It can be done but better plants can be grown using the light spectrum ranges for both types of chlorophyll.
 
H

Hillcrest

Active Member
Forget it move on.
Facts read don't really add up and info read is misleading. It isn't a viable efficient plan. If this was possible..it would have been done many many yrs back. Stoners are slow... but not that slow they haven't tested every kind of light over the yrs.
Basically theory half right . Alot is missing to make this theory viable. Sorry :(
 
H

Hillcrest

Active Member
maryjane4ever said:
NOTE: lumens are based on what HUMANS see NOT the PLANT
if anyone were to try out this theory, post some pics + results ;)
Click to expand...
Not quite true statement.....My light meter records the lumens that fall on it. The light meter doesn't work like the human eye and records a variety of spectrum strengths.
Ok not all..... but given the kind of bulb and given the fact certain spectrums generally occur together or at least very close we can make a few assumptions giving us a reasonable reading. I know a few shops that have sent bulbs off of ALL KINDS of tests to have their spectrums and strengths calculated..... black light is never one of them for a reason.
 
maryjane4ever

maryjane4ever

New Member
ok thanks for you guys reply! i was just in a mental thinkin state, and well that was what went though my mind, and well if anything of what i said could be helpful to futur light and or reaserch development well at least i spoke out about it.... anyways thanks, and dont worry, be happy !!!!!!!!!!!!!!!
(thanks again!!!)
 
maryjane4ever

maryjane4ever

New Member
Hillcrest said:
Not quite true statement.....My light meter records the lumens that fall on it. The light meter doesn't work like the human eye and records a variety of spectrum strengths.
Ok not all..... but given the kind of bulb and given the fact certain spectrums generally occur together or at least very close we can make a few assumptions giving us a reasonable reading. I know a few shops that have sent bulbs off of ALL KINDS of tests to have their spectrums and strengths calculated..... black light is never one of them for a reason.
Click to expand...
hey, this has nothin to do with the post (almost) but i found some LEDs in hong kong (ebay) that put out around 460 nm wavelengths at about 210000 mcd at a 140* angle (i know its not the recomended light spectrum) but that equals around 80 lumens (those are 1 watt LEDs) but i was wondering if that was even possible, because so far i havent seen any lights tyhat give of that amout of light per watt (not even HPS/MH/HIDs) which may be good, if you buy them in decent amounts, but for the question i was going to ask you, have you ever tested these lights withyou light meter ? (if you ever saw them) and if you could, would you test to see if the info are correct ?
 
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