[kevins007]

Can someone please tell me how LED beam angle affects plant growth? I am looking at purchasing a light from buildmyled.com and this is one of the options that I have.

Thank You,
kevins007

 

[UDGags]

http://reefbuilders.com/2010/01/27/led-optics-explained/

Basically the wider the angle the more the light is spread. The more it is spread the lower the PAR value will be at the bottom of the tank. I believe it is Hoppy that has the equation in one of his posts if you want to input your dimensions to see what angle is best....my guess is 75°

edit...here is Hoppy's post http://www.plantedtank.net/forums/showthread.php?t=168999