George Patterson wrote:

Absolute bull. I've never seen metal halides put inside a canopy. They
generate way too much heat for that. Usually they are suspended about a
foot above the tank.

I have seen plenty of metal halides supended about a foot above the
tank, yet still inside the canopy. I'm guessing you just haven't seen to
many canopies that are made for this sort of thing? (ie: canopies that
are 2-3 feet high)