Ventilation in a canopy

Reef_Tank_Fan_SC · Apr 11, 2018

So I am finally upgrading my 29 gallon to a 40b and I build a canopy for it. I was wondering How you guys feel about ventilation in it. It is sealed all the way around. I have a 5"× 6" hole in the top of it with some egg crate covering it that sit right above my light fixture. I also have two 80 mm fan I'm gonna use to move air on the inside if the canopy but I am looking for suggestions on placements. The canopy is 37" long by 11 1/2" high. All suggestions are welcome and wanted please. Thanks guys.

Wieloch89 · Apr 11, 2018

I would say you want 1 fin in and one fan for exhaust and the fan that’s drawing from the outside should be blowing accross the water surface.

Reef_Tank_Fan_SC · Apr 11, 2018

Thanks for the tip man, I appreciate it. I figured to get a few more also, hopefully I will before I get to the finish line on the canopy

Billdogg · Apr 15, 2018

IMHO, you'll be better off, and get better air circulation if you have both fans blowing in and let the warm air exit passively through the hole in the top. You will also get better fan life because you won't be subjecting one of them to constant warm humid air.

jm.02

Breadman03 · Apr 15, 2018

Billdogg said:
IMHO, you'll be better off, and get better air circulation if you have both fans blowing in and let the warm air exit passively through the hole in the top. You will also get better fan life because you won't be subjecting one of them to constant warm humid air.

jm.02

+1. Both blowing in will help keep the fans dry and salt free. I'd put them near the ends on the back just to keep them invisible.

One fan blowing in and one blowing out will get you essentially the flow of one fan with the power consumption of two.