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Sep 13, 2014 at 19:16 comment added Wayfaring Stranger Commercial site, but I've always liked the "Photsynthetic Response vs Wavelength" graph, and explication on various measures of light at this site: sunmastergrowlamps.com/SunmLightandPlants.html You'll want to be sure to stimulate both photosystems I and II. Look them up on Wikipedia. If power is very expensive, you might consider going to LED lamps. Those are just starting to catch on.
Sep 13, 2014 at 16:32 history protected J. Musser
Jan 17, 2013 at 13:03 history tweeted twitter.com/#!/StackGardening/status/291893594917322752
Jan 15, 2013 at 4:56 vote accept N3R0
Jan 15, 2013 at 4:55 comment added N3R0 I would like to use red and blue spectrum and cycle it through out the night, They say red light promotes flowering and blue for leafing.
Jan 14, 2013 at 19:47 comment added Noel Are you experimenting with only supplying specific wavelengths, and do not want to use full spectrum lamps?
Jan 14, 2013 at 19:24 answer added kevinskio timeline score: 6
Jan 14, 2013 at 13:55 comment added winwaed I haven't done any experiments, but I would expect a typical "Daylight lamp" (ie. with a colour temperature comparable to sunlight) would be the best choice.
Jan 14, 2013 at 13:16 history asked N3R0 CC BY-SA 3.0