Led autoflowering

Hey everyone. Has anyone out there grown autoflowering cannibus (lowryder 2) with LED's. I am starting my own grow as I write this i have 2 13 watt led mixed blue and red bulbs and on 50watt mixed blue and red bulbs. I am putting the two 13 watts on the sides and the 50 watt over the plants on a 2ft tall by 2ft wide by 17inches wide custom grow box. Id like to know what other peoples PERSONAL experiences are. Im not looking for input from anyone who hasnt used LED's before. Thanks.

~Smoke Blissfully, Life Is Good
 

erniechef

Member
whats up, i got 10 plants (7 lowryders,2 ak 48 auto,and 1 purple kush bagseed that i came across last week) under a 300 watt try-band led and 2 105 watt 5000k 4 42 watt 6500k ank 16 23 watt 2700k cfl and im 18 days in now looking reel good 10 times better than expected the trick is to keep all of your lights about 8-12 in away the first 7- 10 days and then 2-6 inc away throughout gl.
 

LEDGirl

Active Member
I mean no disrespect, but don't expect to yield hardly anything with the lights you have (not the 300W guy). You're talking about 76W of unspecific LED wavelengths at a 120 degree emitting angle. If a light only uses red/blue, it lacks over half the spectral output needed for photosynthesis. Most red/blue grow lights give you a 450nm or 460nm LED, and a 630nm red. If you're lucky you may have got a panel with 660nm, but it's doubtful if it's only red/blue. Anyhow, marijuana uses 439nm and 469nm, meaning that whatever blue you get is right in the middle, instead of right on top of the point it should be on. This will result in a way lower energy convergence by the plant, as it's peak efficiency is at 439 and 469. Likewise, if you're going to flower, you ABSOLUTELY need 660nm in order to achieve good results. If all you have is 630nm, your plants aren't getting the deep red they need for full flowering. In the end, you're also using a 120 degree LED, and although you are in a small, enclosed area, it shoots light out in literally every direction to try and create a large coverage area, which means that the light emitted per square foot is much less intense/bright vs a light using 60 degree LED's. 120 degree LED's are not good at penetrating, which makes them a poor choice for any type of growth, especially flowering.

So I wish you the best with your lights, but many people have already attempted what you're about to over the last 3 years, and no one has ever reported good results with a basic red/blue light.
 

jakeso123

Active Member
whats up, i got 10 plants (7 lowryders,2 ak 48 auto,and 1 purple kush bagseed that i came across last week) under a 300 watt try-band led and 2 105 watt 5000k 4 42 watt 6500k ank 16 23 watt 2700k cfl and im 18 days in now looking reel good 10 times better than expected the trick is to keep all of your lights about 8-12 in away the first 7- 10 days and then 2-6 inc away throughout gl.
Do you keep your LED lights that close? I've been growing AK 48s under 2 90 watt UFOs, and I have been moving the lights upwards as the plants grow. The Plants are about 60 days old and just starting to form the central bud. The lights are 18 inches above the plants. According to the manufacturer of the lights the 90 watt UFOs should be between 16 and 20 inches above the plants for regular plants and you raise the lights as the plants grow. This goes for regular cannabis but I am unsure about autoflowering strains. Any advise would be welcome. I should add I supplement the UFOs with a 15 watt red spectrum bloom light.
 
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