LED Lab 2009

[billyjojimbob11]

Lovely grow! Winderful plants, are those more on the indica side? From my experience, the indicas dom's love the leds more than the sativa dom's.

Also, I am putting some of my clones under pure white spot light and im getting hairs in a week now , yet flowering is still dragging by maybe a week or so.

After only 2 days with the 590nm, it could be possible that I am already noticing some extra weight in contrast to the warm white on plants currently in flowering weeks 4-7, they seemed to respond instantly. Time will tell, but I am getting a good feeling.

If the 590 does not outperform the warm white, i think it will be very safe to conclude that the lack of photons will most likely be the main reason for less weight and longer flowering with leds.

After this experiment with yellow, I will replace the yellow with red and test it again against an extra 12 watts of 630nm to see if supplimentation of diversified par light makes any difference in regard to earlier flowering and weight.

I would also like to try a 100% red grow with no blue or white.

 

[unthing]

Not gonna contribute any scientifically valid stuff to this great thread, but some personal views from what I've read about peoples experiences with leds.

Somehow I assume that that 590 nm isn't gonna show much difference compared to whites. Good still that you are experimenting with it, so we can know more.

Also uv and far-red might not bring much difference, just more photons are needed overall. So blue+warm white+red could be good enough. Efficiency-wise the 630 nm seems to be better at the moment than the 660 nm deep red, and I'm kinda interested in that segment of wavebands mostly.

Like what ratio of 630/660 or either one purely? Over and over again deep red is said to be the shit, but with current low efficiency, wouldn't compo of these be better?

 

[billyjojimbob11]

Somehow I assume that that 590 nm isn't gonna show much difference compared to whites. Good still that you are experimenting with it, so we can know more.

I agree with you, it seems unlikely that 590nm will do little for our shared love of huge colas. But in order to move on the next trial, it has to be tried. There are 2 reasons I have for trying the 590nm.

The first on is to stimulate vigor among the tarpens etc of the bud so that we may get the smell and taste of MJ that we are used to from traditional sources of lighting.

The second is admitidly far fetched, but is based on diversification of PAR lighting for the purpose of creating a more efficient plant response to that light. The theory is based on efficiency of the light dependent reactions and its relativity to the light curve of narrow bands of light, and the possibility that plants light intake is limited to a "light saturation point" more quickly reached with narrow led bands (for example: only using 630nm would theoretically cause us to reach the light saturation point quicker than we would with diversification of light bands.)
The question is not whether the "light saturation point" exist, because it does, the question is how many photons does it take for a narrow band of red to reach that point, and are we beyond that point? if not, then how much red light will we need to reach it. A graph I made to show.

 

[billyjojimbob11]

Look like the white russian is a definite winner with leds.

 

[LeoRexTyrannus]

@BF that sounds like a good idea, if photons is the lacking issue then supplementing with HID for 4 hours should significantly reduce the issue.

Scientifically it would be great to know the saturation point for photons, then you could merely provide the HID long enough to reach close to the saturation point and then finish it off with LED to control the photo period.

 

[clonedoctor420@]

great thread

great thread

i have a led ufo i got off eBay that has red, blue and orange led's and just ordered one with the red, blue and white led's. i'm hoping to do a test in the next few months. from the info i've learned here i will be going with a short fat indica strain to avoid penetration problems.


here's the R-B-W
http://cgi.ebay.com/LED-UFO-GROW-LIGHT-L-E-D-BLUE-RED-400-watt-HPS-system_W0QQitemZ120343360339QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0505f353&_trksid=p4634.c0.m14.l1262&_trkparms=|293%3A1|294%3A30



and the R-B-O
http://cgi.ebay.com/NEW-90W-LED-TRI-BAND-UFO-HYDROPONIC-LAMP-GROW-LIGHT_W0QQitemZ190322385495QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item2c50192257&_trksid=p4634.c0.m14.l1262&_trkparms=|293%3A1|294%3A30

 

[rambam]

A number of you have suggested that if maximal yield is desired, that until LED technology progresses a bit further, CMH is the next best thing. Yet there seems to be a consensus that CMH while producing better quality, doesn't match HPS for yield. I am anyway trying to avoid the greater heat of regular MH/HPS and would like to try this compromise - What do you think about combining a 400W CMH with this 90W Far-Red Flowering Accelerator? Apparently it is all IR (above 700nm) http://www.prosourceworldwide.com/product_p/flower accelerator.htm

 

[rambam]

Is that part of the spectrum where HPS excels and explains its advantages in yield or mightI still be in the same situation re weight, even with that combination?

 

[clonedoctor420@]

ebay led ufo

ebay led ufo

red, blue and orange led ufo and a few clones.

 

[LeoRexTyrannus]

CMH has everything HPS has, HPS merely has a more intense spike in the Orange/Red spectra.

Therefore with that said you're correct, if you could supplement the right spectra it should resolve this biomass issue.

We know the 400W CMH will provide ample amounts of photons to power the photosystems.

If the Deep Red does not work I'd suggest in your second and third waves of experimentation to try Amber or Whites like many are using here in their LED setups.

If it works do please tell the world as I'll buy one and add it to my grow.

An alternative to this would to be to use perhaps a small HPS unless cost and as you said heat prohibitive.

I think I'll go research that a bit latter, I haven't ever read a CMH + HPS hybrid grow log.

@ Clone Doc, your clones look great under the LED but man get off the rockwool, and get on the ultrasonic fogger band wagon, I thank you and other peoples posts on fogponics so much Weezard and Knna, I am fully converted to the Church of Fog and I testify its superiority to all other methods of cloning.

The only thing now is, how do I start seeds with Fog? If I knew that then all other known methods would be dead to me.

Well enough non LED talk, carry on nothing to see here!

 

[clonedoctor420@]

ufo spotted

ufo spotted

@ Clone Doc, your clones look great under the LED but man get off the rockwool, and get on the ultrasonic fogger band wagon, I thank you and other peoples posts on fogponics so much Weezard and Knna, I am fully converted to the Church of Fog and I testify its superiority to all other methods of cloning.

The only thing now is, how do I start seeds with Fog? If I knew that then all other known methods would be dead to me.

Well enough non LED talk, carry on nothing to see here!

thanks for the Kind words. the fresh clones that were under a couple of 125w cfl's responded great to the UFO, however i did notice some internodel stretching. the older plants exhibited a bit of shock and their leaves drooped for a few days but are now starting to point straight up like this "v". the same thing happens (in rockwool) when i transplant from the 125's to the big 600w -1000w. they droop for a few days and then BAM they take off like crazy. i think it's just a bit of light shock as well as oxygen deprivation until the root grow out of the rockwool and into a higher o2 medium.

i root aeroponically in a ez-clone and then into rockwool. i have worked with the 6x6 blocks for a few years vegging moms and flowering as well. then just vegging moms and now i'm done with it except for the cloning plugs and really small cubes. for the most part i'm going back to soil, aeroponics and grow rocks. i will definitely look more into fogponics for my next cloning project, thanks.

just got my new red WHITE and blue led ufo in. more to come.....

 

[hollywood33]

pictures of my first led grow

pictures of my first led grow

My Friend developed a full spectrum led grow light, he let me barrow one to see how I like it. He said he uses 6 spectrums of light and this led grow light cant be compared to their led grow lights out on the market right now. These are my results so far day 17 into flowering. By the way this is my first time growing indoors and I really think he nailed it with this 6 spectrum light. Let me know what you guys think.

The two tall plants are skunk #1

Front left train wreck

Front right white widow

 

[billyjojimbob11]

Yes, I would agree, the more PAR spectrums added, the better. Red and blue are the main colors, but in my case, adding amber leds has dramatically increased bud density so far. I will post pics later this week as they finish.

 

[bf74]

thought you guys might want to see this-the 180 watt jumbo ufo.Got her for 300US-as long as I do a journal with it.

 

[bf74]

this is day one under the jumbo-it was 2 illuminators-tri bands, before that.

 

[clonedoctor420@]

very cool

very cool

very cool bf74!
i think i'm going to give one of those a try.

 

[bf74]

very cool bf74!
i think i'm going to give one of those a try.

thanks clonedoctor.If ya do a grow journal you'll get a discount-25%, if you do a youtube video, comparing prosources led products and a competitor-50% off.And I esp like the 90 day money back.They seem to be very confident.

 

[LeoRexTyrannus]

Long time no post.

Long time no post.

@Holly Those plants look fantastic, does your friend plan on retailing his version?

@CloneDoc EZ-Cloner's are a vastly overpriced I would say, for $50 you could have a 16 site like me using 1 of "The Mist Maker" from Mainland Mart, now I know you made the investment in the EZ-Clooner so my question is does it have a sizable amount of water inside constituting a reservoir? If so then adding an ultrasonic fogger to it combined with the existing aeroponic spray system couldn't hurt and it will be leveraging your existing investment while enhancing your root growth rates. I don't have a camera to my self, otherwise I'd have done a thread on how easy it's to build, but there are already threads on here discussing it, just keyword search "ultrasonic fog", it might take some sorting but you'll find the relevant threads. One thing I can attest is my clones I started in Jiffy plugs are lagging horribly behind my ultrasonic fogged clones. Next crop will be all fog clones because of this issue.

@Billy Thank you for your feedback on amber, as I suspected it seems it's the amber for the biomass trigger, but I will with hold conclusions until the end of your grow, and upon a second source confirming it, only fools rush in.

@BF How many watts is that unit you got the discount on? And basically you're telling me that one could buy a cheap knockoff, compare it to a ProSource edition and in the process get 50% off the ProSource model? Sounds like a great way to get two reasonable priced UFO's if not a bigger setup. Your plants look excellent still.

 

[bf74]

Thanks Leo- you can do just that-up to 350 watts.Or you could go the 90 day trial-no like-send back, that easy.But thats a good idea-2 ufo's would def expand anyones grow area.I saw 150US-knock-off quad bands on e-bay, get one of those and a half price 90watter-good idea

 

[bf74]

Oh yeah-the jumbo is 180 watts-2 bands of blue, 2 bands of red, 1 band of ifrared.I've been growing with their stuff online for a year-so they really hooked me up.I'm hoping this one goes well-who knows what they'll hook me up with next.