126 Watt LED Test Featuring Ice

[whatissixbynine]

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[Sleepy]

Sleepy, glad the light is working out so far. Are these cuttings from an established clone mother that you have already run? If so, how would you compare the growth of these plants with the LED versus what you have managed with HIDs in the past? Is there a rough correlation that works out to be (more or less) what LEDgirl is claiming for her lights (i.e.: the 126 watt LED panel grows the same amount of bud as a 400 watt HPS)?

Your opinions count with this kid...

these are from seed.

the growth is deeper/darker green and seems more healthy to me than under my T5.

 

[Fat J]

I wonder if anybody has tried making a grow light out of the samsung phlat light led's - they are super hi output - one of them is about as bright as a 250w mh, but i dont know how the efficiency numbers look as the phlat lights generate a decent amount of heat... any 1 heard of it?

 

[mpd]

Better than T-5s? Wow, I think that is very significant. Most growers agree that linear fluorescent lights provide the best overall vegetative growth and the advent of CFL technology now makes it even easier to gain the benefits of the output of the fluorescent spectrum for the benefit of plant growth.

Your findings threaten to change all of that thinking.

If LEDs can be said to be comparable to the results you would get with linear fluorescent technology then the game is completely changed in my opinion. If we can get the same results as a T-5 array for the vegetative growth cycle then we have a proven concept here that is beyond the doubt of reasonable minds.

This is big-time huge.

 

[overmyhead]

I'm going to get one (not sure which brand now) and test against t-5's - question is which one. Theres this one but then others using 3w leds, and even one (growl) that has veg only 3w panels. THen there's the tons on ebay but for some reason I'm more comfortable with slick marketing lol.

 

[420ish]

i have a first gen hid hut ufo and it has worked great in veg.know alot of people that have used the ebay knockoffs for veg with same great luck

 

[sprout42O]

Can't wait to see how the flowering goes under these lights!

 

[grumblez]

I used LED lights from Ebay to veg my 1st grow and they worked great. I got 4 of the 25 dollar 13w panels and mounted them vertically along the sides of my plants while I hung a 24" tube above them. They turned out fabulous.

I am moving the panels inside a tent that will serve as my mother box and will look into a knock-off 90W UFO for the long term.

LEDs rock the house and I cannot wait until prices drop so they are more feasible for folks not looking to drop 1K to bud with them.

Does anyone know if the orange spectrum is needed? I see ones with two and three wavelengths up there...

 

[Sleepy]

update...with heat and pics!!

update...with heat and pics!!

posted on 12/02/09:

I guess this is a new problem, specific to LED grows:

It's TOO DAMN COLD! LOL!

You need to be at 70 to keep your plants growing (according to my buddy Jorge)...

Guess you need a heater in your growroom... LMAO!

and again on 12/04/09:

just as I suspected. LEDs are gonna make growers rethink all grow room design and methods. 68 degrees with 24 hour light!?! ridiculous. gonna have to start insulating rooms to keep the heat in and buying portable heaters.

sorry, man...

I don't know any growers who like the idea of adding 1500 watt heaters to there grows. its defeating the purpose of LEDS saving energy and increasing yields.

Temps in basements are usually 60ish without lamps heating the grow.
Just sit back and watch all we can do.
I'm glad you haven't altered your grow to fit the lights rather you altered yours lights to fit the grow.

Good job sleepy

i started to get worried about rot, the pots just were not drying out one bit...i had to do something. adding the heater did not thrill me, but losing the plants would have been even worse. (sorry).

and again on 12/05/09...

Sleepy: you could try to run the seedlings in an enclosed space, as a single 126W is not going to produce enough heat for 1 room to stay warm. That would be similar to asking a 150W HPS (or better yet, 120W of fluoro) to produce enough heat for the same sized area. So for situations like these, either more lights are necessary to heat the area, a cheap space heater is needed (and they can range anywhere from 300W-1500W+ depending on the size of space you need to heat), or the grow space needs to be enclosed with insulated materials. Either way you go, it's not a difficult fix.

so it seems i am a bit dense...many of you directed me to install a space heater, and i ignored everyone...i am sorry about that.

but, on a brighter note: after setting up this little gem:
i have increased temps to 80 degrees F., and the plants are taking off!! i found the heater at home dePot for $17.99...it has an adjustable thermostat and two power settings: 1300 and 1500 watts...i have it tied by twist-ties from the top and back just in case!

here are the plants, still 4 ladies:

runt coming along...

number 2...


these two are doing much better, standing at attention...



thanks again for all of the help!!

 

[mpd]

Is it me or are those nodes tighter than the groin of an old witch? I see some tip burn, but that could be caused by a lot of things or just the strain. I'm focusing on those nodes. Did you "dress up the stem" when you transplanted, thus hiding any excessive stem stretch or is stem stretch no longer an issue (perhaps because of the impact of the LEDs)?

 

[Sleepy]

no hiding, no BS...

very tight node spacing.

very tight.

 

[Bobby Stainless]

Those are some good looking shrubs Sleepy!

 

[opt1c]

with nodes like that u could grow a softball sized nug; looking good

 

[Skip]

i have increased temps to 80 degrees F., and the plants are taking off!! i found the heater at home dePot for $17.99...it has an adjustable thermostat and two power settings: 1300 and 1500 watts...i have it tied by twist-ties from the top and back just in case!

Congrats! Guess what? I just bought that same heater yesterday too! LOL! Same price at Walmart.

But to keep me warm, not a grow room...hehe...

I wonder how many LED grows failed due to cold grow conditions? Seems few ppl have bothered to compensate for the loss of heat from the HIDs...

Your plants are looking much better now!

 

[grumblez]

I would love to see a split screen between a 400 hps and an LED (120W) fixture. I saw a 90W light vs 400 watt and the 400 finished quicker and heavier in yield but cannot find it online now...

I bet that 120W is the bomb....ebay has them for $160 shipped.

I could see going from HPS to LED in the summer months...or some mix of 150W HPS with LED to keep thermals in desirable range.

 

[TickleMyBalls]

now those are looking like some nice healthy plants. i knew there would be a learning curve. you caught on fast though sleepy!

 

[mpd]

no hiding, no BS...

very tight node spacing.

very tight.

maaaaaaan. That's a BIG quality indicator in favor of LEDs. Plants stretch to get more light until they practically fall over and EVERYONE has had this happen. Come into the grow room and the plant is limper than a politician's handshake. This is a real advantage. Look at those nodes in the picture - the dang plant looks like it could be Romain lettuce for God's sake!

Sleepy, what's the offset between the light and the plants?

By the by, my good man; when you get tired of playing 20 questions with me, just tell me to STFU and I'll sit on my hands for a change and just stare in awe.

 

[Sleepy]

i originally had the light 7 inches from the top of the canopy...to induce a bit of stretch, i have raised the light.

now the distance is a foot.

next round of pix, i'll take some of the plants on their sides with a tape measure...hard to see the size with no scale/perspective...

i don't mind your questions, mpd...this light would be perfect for your cabinet!

 

[chuckyoufarley]

very nice my friend .im glad we got an experienced grower to do this test .you seem to be happy with the light. think it might change the the lights you usually use for veg or flower ?

 

[de Toke-ville]

Great documentation of conditions and adjustments, Sleepy.

Regardless of the outcome, we're gonna a get a good sense of where this tech stands re: cannabis cultivation. Thanks for the attention to detail.

Having said that, as a micro grower in a room temp, climate controlled environment, this gear's got me a little excited.


-dTv