I updated the Aquarium Lighting article with more updates about the
newest generation LED and T2 lighting systems.
As well more information based on field tests of HO-T5 and VHO power
compacts that are often over hyped in the aquarium hobby (& other
forums) even though the SHO, LED & even T2 are better performers for
less money, especially when light lifespan is considered (especially
the newest generation LED)
http://americanaquariumproducts.com/Aquarium_Lighting.html
Carl