I have a 3' square tank with canopy. I run 2 150w mh, 2 double strip T5's.
I struggled with my temp for a bit.
Out of the top I cut a 20" by 10" rectangle, covered it with that black gutter guard mesh. I also cut in a 4" square fan which blows air up and out of the canopy, it runs 24hrs although now I'm thinking I should turn it off at night.
I have 2 - 6" clip on plastic blade fans mounted inside the canopy, 1 directed at the water surface. They are timed to come on when my 1st T5 comes on, and off when my last light turns off.
I recently accidently turned off the square fan for 2 days, my temp went upto 82 degrees.
Otherwise my temp drops to 77.1 at night, and maxxes out at 78.6 in the afternoon.
|