General Marijuana Growing
Are LED lights any good? in the
The Grow Room forums; comments opinions knowledge and wisdom welcome
Are LED lights any good?
comments opinions knowledge and wisdom welcome
I hear that they are awful. Even if you get a good setup, their efficiency rarely manages to beat CFL's, if ever. And for the prices you are going to pay for LED kits, there's no reason you shouldn't just buy a HID
You will get a variety of opinions on this subject....and I am no pro when it comes to LED but in my experience which is not much with LED is that they work exceptionally well for vegetative period of a plants life better than regular fluorescent tubes I have led and fluorescent for my mothers...now for flowering I have not flowered under LED but from everything I have gathered from many led grows is that lack penetration power to produce nice nuges under the canopy....
Last edited by jcdws602; 01-25-2010 at 02:16 AM.
Able To Roll A Joint
Able to roll a joint
LED work wonders for veg growth, but switch to something else when you get into flowering, theyll grow nice and big in veg and then switch to an hps great results, the only reason LED suck for flowering is because they cant get everywehre, if u wrapped LED around the plant pretty much touching, you would get an amazing plant, but idk who can afford that lol
Are LED lights any good?
Interesting that you would ask that question! I have been keeping one eye on "LED Progress" every since N.A.S.A. first brought them to everyone's attention, a few years ago.
Originally Posted by TylerG
At first it was all "Hoop-la", but the results were really shabby. After a couple of years, a few people were reporting some success. For the last year, or so, a lot more people are reporting more and better success.
I read a "Grow Journal" the other day that used only LED's and yielded well over a gram/watt, dry! I want to say like 1.5 or 1.75 gram/watt, but i don't remember exactly. IMHO, they need to do way better than that to warrant the high price tag; but that's just my $.02 worth!
For the last couple of years, the trend has been to use fewer "Higher Powered" LED's. And, at last, they are using many wavelengthes instead of just a couple or a few! That has always been my main "drawback" (not enough wavelengthes). Some are even including UV-B LED's now!
So, yeah, the tide is turning!
I agree generally with the other members in this thread. But, I'll put my own 2 cents in too.
From what I've read, they can be a good source of supplemental light if used in conjunction with CFLs and HIDs. When used alone, results are hard to come by.
I am however running a current experiment to see if a PC stealth setup with a good mix of LEDs and CFLs can yield good results. One thing I have noticed, is that even big LED panels generate virtually no heat--even much less than CFLs! This is a big bonus where I am using extremely quiet fans that cannot move super lots of air.
Before I give a quick rundown of my setup, I'll give some tips, info, and recommendations on LEDs:
1) Buy mixed-band LEDs. This means that that a given LED light panel should have a mix of blue and red and maybe deep red LED diodes. The blue for vegetative growth and red for flowering.
2)Disassemble your LED product. Yes, you heard right. Unless you have a fancy UFO lamp (don't assemble those), you will be buying either a LED spotlight or a LED panel. These spotlights and panels have a ton of extra space in the lamp body or the panel body--taking valuable space from your setup. Take off the back of your LED panel with screwdrivers and you should see one of those green-looking electronic project boards. You'll probably also see the extra length of the LED diode contacts. You can clip this extra "wire" down to the solder. Then, cover all the electronics with duct tape--probably two layers of high-grade duct tape. Cover all the rest of the exposed wire and resistor contacts (duh!) You'll have noticed that you have decreased the thickness of your LED panel by up to 50%. This makes even one of those big 225 diode panels usable in a a stealth setup (PC, rubbermaid, small closet, etc.) NOTE: You are in no danger of overheating--LEDs run COOL!
3) PUT your LEDs close to the plants.
4) Buy a panel or UFO with big LEDs--it's better to have fewer LEDs which each output a lot of light than having more LEDs with a low wattage each.
5) Buy a high wattage panel--look at 50w panels from SenLed. You probably don't wanna bother with those 13w panels--they're just not powerful enough worth buying.
6) Buy big LEDs. I'm running 10mm diodes on my 50w panel.
7) LEDs are HIGHLY-directional. This means that they really only emit a considerable amount of usable light in one direction--directly out from the diode. Put your LEDs in direct line with your plants.
Ok, enough tips--these should guide you in your purchase and implementation of a LED light supplement. Now, for a word on my setup.
My stealth PC box can run up to 4 CFLs and has a 13w LED spotlight-converted-to-a-panel and a 50w panel converted in the same manner. I have the 13w directly on a seedling. It likes it. The 50w is mounted on the side of the case to get the entire side of my plants. One CFL is movable and the rest are mounted at the top of the case. I'm always fooling around w/ my setup but a LED supplement can be a nice addition where HIDs are cost-prohibitive and CFLs and HIDs generate too much heat. My general approach is use a few less CFLs for heat and fill in the gaps with LED. I'm not going to lie--I'm expecting big yields.
Check out my grow in my signature for more details and pics.
Best LED lamps I've seen so far have been these. They are by no means cheap by any means but I think they are the best money can buy at the moment. The prices have to come down as they get better and more people take the plunge just like any thing else. Check them out.
600W LED Research Grow NASA would be proud of!
540 grams dry from 600 actual watts of LEDs and he was growing different strains not trying to max yield for the space and wattage.
I'd say that's pretty damn good. LEDs might not be for you but if you have the cash or understand the need to tune the spectrum like they have done with these lamps and can build your own, LEDs might be the way to go for you!
Here's a video of his grow.
Last edited by 110100100; 01-26-2010 at 06:04 PM.
YES, MY ANSWER is YES! with small prints .... Only those grow lights with 1w (or more) LED is worth using. Only red and blue will stretch plant, so triband or quadband LED if you are going to buy one.
watch these 2 video and it may help
These are a few pictures in this thread that can show you some results (mine included ):
21 days in to flowering. LED GROW!!!
By grow space in forum General Marijuana Growing
Last Post: 06-25-2011, 09:36 AM
By Dr.RR in forum Indoor Growing
Last Post: 05-22-2011, 09:42 PM
By Skateforlife6 in forum Newbie Central
Last Post: 03-23-2011, 03:50 AM
By beginner1 in forum CFL / Fluorescent Lighting
Last Post: 09-10-2009, 04:07 PM
By stoner ste in forum Newbie Central
Last Post: 06-10-2009, 11:34 AM
Tags for this Thread