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I read this website every day.. Some interesting stuff on LED's today.. http://phys.org/news/2014-03-technique-brighter-resilient.html

After accumulating some experience with shop lighting using china 10w leds from ebay and some aluminum tubing, I decided I was ready to make my first grow light. While I'm not growing the beautiful cash crops you folks are, I figure cannabis is going to want the same fundamentals as peppers...

My application is to start vegetable seedlings and grow them to about 10 inches tall before planting in the garden. They will be planted in standard greenhouse "flats" with 48 seedlings planted in a 11 x 22" flat. I'm making a light bar from five Cree XM-L2 leds (on advice from Supra) and four...

Thinking about purchasing a meter.. (luxometer??) Any advice or suggestions? I know nothing about them... Want to stay cheap if possible.

I love it.. http://www.cnn.com/2014/02/16/us/snake-salvation-pastor-bite/index.html?hpt=hp_t2

Anyone have any suggestions for a good quality handheld LED trouble light? Looking for something really bright and something that doesn't have the transformer built into the cord plug. Tired of dropping them and busting bulbs while working on equipment.

I hear a bunch of talk and complaints about low quality lighting... So I have to ask, what is the real difference between a high quality LED setup and a low quality one? Is it just mainly in the LED's themselves? Poor quality is some no-name china import where high quality leds are brand...

Hi, I'm installing some Cree XML2 chips on an aluminum tube.. I need to increase the sum of the forward voltages of my series setup and figure I may as well add a few red leds to the array. So, I ask.. Which model red are you folks using? Is there a specific chip I should look at? Thanks,

I am building a grow light for some vegetable seedlings. We start them from seed in "flats" that are 11 x 22 and have 36 plants in each. We grow the seedlings until they are about 8 inches tall and then plant them if our timing is right for the spring. We usually have 8 to 10 flats each year...