Sorry BBQ I was looking at nano reefers chart. I final looked at yours. Funny thing is I just got off the phone with another lighting rep of another manufacture and his take on LED's. When I asked him what he thought of Cree, his answer for Cree was crap. He says Samsung is where it is at? I guess even on the commercial side there are plenty of arguements? Anyway back to my metal halides, let me know when ya'll get this led thing figured out?