Refugium lighting
I run several refugiums on my aquarium. I have use T5s switched to Marineland Reef LED Light Fixture & even used DIF-30 18,000K LED Pendant, but not one lighting type has ever come close to the amount & pace of algae production that grows in the mangrove refugium on my back porch. The mangroves are shaded most of the day and usually only gets indirect sunlight but it easily out produces the much bigger dedicated algae refugiums inside, and this inside refugiums get 16 hr. of light! After reading the article about "œOrphek LED to Release Refugium Specific Light" I think I understand why this is.
http://www.reefs.com/blog/2012/04/17/orphek-led-to-release-refugium-specific-light/
I can't wait to try out this new light from Orphek, and compare it with the other lights as well as mother nature.