Thanks for the replies, Terry and Naoki!
I currently have one ALT PAR38 30-Watt 100 Degree Light from Jerry at orchidweb.com, and several of the 13-Watt LED Lamps from Ray at firstrays.com
orchidweb.com says the 30-Watt 100 Degree light gives Medium-High intensity at 3-4 feet, and Ray says his lamps grow phalaenopsis well at 12-15" distance... I am trying to quantify intensity, so I can optimize a variety of plants in a relatively small growing area...
I couldnt find much detailed info on spectrum of either light, but will take a look at the site you mention!
Thanks for the info!
-sam
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