well, I dont have a canopy and I was thinking about getting a coral life aqualife pro
http://www.marinedepot.com/ps_ViewIt...t~ES53504.html
I can mount it right on my tank and I am getting a good deal on 1 from a friend. I figured it would be ok without a chiller since it is only a 150 and has 3 built in fans and I will add 2 more to blow on the surface.