Had a straight pin JBJ fixture on my smaller tank. Didn't use it properly and the connectors melted onto the pins (yeah I deserved what I got) and ruined the fixture.

Now Im looking to set up a big tank and use CF fixtures again. Thought about attaching the fixture(s) directly to the canopy. Now with an open top and just the canopy on the tank will this happen again?

Or should I buy a large fixture with fans?

If I went with a deeper tank can I just bolt on reflectors and run multiple single fixtures to the canopy and not have to worry about overheating again?

That the best way to go?