Would spray painting the tub with black spray paint help?Sounds all good bud. I was dying to telling you to get a air cooled reflector the whole time I was reading and glad to see you're on your way with one definitely the solution to your temp issues. and if i was you i would temporarily use 3-4 42w daylight cfl's to get those babies going, that way your temps will go down until you have a better setup. also too, what is your res tank temps? may want to wrap it up in black duct tap a couple times to ensure no light enters to avoid root rot