A few months ago I promised some video of an 'experiment' I was planning. I put experiment in quotes because it isn't a very well controlled experiment. Best I could do on short notice. If this works, the first video is the setup of the experiment, the second the 'results'. They are kind of long, and might even be a bit boring, I've never made a video before...
Experiment: One tray of plants placed in greenhouse, one in basement under a 45W LED system (Sunshine Systems). Plants were as identical as I could make them. Watch the videos for more info.
Results: Given the fact that temperature was uncontrolled and that it was only two months... I'd say the LEDs did a decent job. Masdevallias grew much better (might want to fast forward to around 11 minutes), and a little dendrobium hybrid did pretty well. I've visited each and every darn plant in the followup video, yes it does get a little long.
LEDs vs Greenhouse
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