Circulation fan needed in canopy?

[benpoole28]

Canopy will have 2 250w halides, and 3 reefbreeder value LED's. Should i install a few fans to circulate the air? the back of the canopy is open but will be pretty close to the wall. Should I cut holes in the top of it to let hot air out?

 

[davidinga]

Two 250's in a semi-sealed canopy? Yes you will definitely need to cut holes and run fans!

 

[jrhunter0000]

With the mh hella yes! go on ebay grab some computer cpu fans id say least 4 to start.

 

[nassar0505]

Yes. I just hit frys up and grabbed some fans and used some dc power units laying around. We all have them from old electronics .

 

[myreefclub0070]

Ben, I've got one fan in the middle of my canopy pulling air out and one hole on each ends of my canopy pulling cool air in so it passes over the fixtures.
You can also do the opposite, 2 fans, one hole, also I put in fans with temperature sensors in it so the fans speed up the hotter the temperature in the canopy gets.

 

[benpoole28]

What's up Marlon, Is the temp sensor tied in with your apex or a separate sensor?

 

[myreefclub0070]

benpoole28;992643 wrote: What's up Marlon, Is the temp sensor tied in with your apex or a separate sensor?

The temperature sensor is actually on the fan itself and comes with it's own power supply, which I have plugged in with my t5(or a timer) so it doesn't run all the time, just when the lights are on.
Here is exactly what I have :