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Not sure about the ph, don't have a meter. I am using tap water, but I let it sit to let the chlorine out.

Everything's been going fine, but then the bottom row of leaves started getting brown spots, then this. EDIT... http://www.marijuanapassion.com/forum/showthread.php?t=23823 <---please read

wow, I didn't know that. Thanks

I did add a reflector. I have the lights in a box with some tin foil on the bottom to help get some light under the canopy. I might add more on the sides to get light going all around.

We'll see. I only have ~$45 invested right now, so if it doesn't work it's not a big loss.

Well, according to the article in high times, 627nm red WILL work, just not as well as the 660s. They focused the article on the LED UFO, a $600 lamp that uses 627s and some blues, not sure what wavelength. The owner of the company that makes the UFO said that he would have preferred to use...

Awesome, I'll check it out.

Well hell...I'll have to get some deep red ones then. What wavelength blue do I need? I wish you had posted that earlier, I just got done with 50 reds...

Good stuff. So should I have seperate blue and red arrays? The ones I've seen before online are mostly red with some blue one scattered around. It would be a lot easier to build seperate ones, though.

I bought 100 red & 100 blue LEDs on ebay and want to use them to grow a couple plants. I searched google for awhile and found this http://www.marijuanapassion.com/forum/showthread.php?t=6441 I also noticed the thread a few down about LEDs. How many of you have tried with LED light and does...