Metal Halide Canopy Cooling

Although it seemed like a good idea in my head, this design for cooling my canopy isn't producing the results I had hoped for. As the picture is illustrated, air is brought in from the center black fan and directed outwards towards the 250W bulbs by the 2 orange fans, and finally exited by the two clear fans. I am thinking the design is flawed becuase there is too many turns for the air cool properly. Tank temperature usually runs 82°-84°.

Would it be more beneficial to rig something to cool the water in the sump which is only a 10 gallon due to limited space from the stand design?

or

Redesign the canpoy cooling to maybe allow the air to travel as straight as possible.


Thanks for the input guys...

 

i found with my canopy, putting all the fans as exhuast works wonders

 

Def keep the fans in the canopy....just redesign,,,,you don't want those halides to burn out faster and you def don't want your canopy to light on fire or your water to boil.

A quick easy fix without changing the fans to much would be to have both of the outer fans sucking out, change them to blow air into the canopy. Take the 2 small fans in the center and move them to the outside of the halides and have them blow towards the center, then have the last 120mm suck all of the heat out. So to recap....

2 120mm on outside blowing air into the canopy
2 80mm blowing across the halides from the outer most portion of the inside of the canopy
1 120mm sucking all of the heat out.

Should work a little better than your current setup.

 

Thanks for the replies. I was also thinking a combination of a redesign and some fans in the sump may help a bit.