L.E.D.s

[Kabong]

I'm with StirCrazy on this one.
Truthfully I can't say Ive done any work with LED's as a main lighting source.
However I'm sure the amount of LED's you would need to light a large tank a get the penetrative power you'd need would be astronomical.
Personally I would wait until PFO releases there LED hood in June and see what feed back comes from that.