Metal halide question

[LittleDevil]

Hi Ya'all


I have a 125 gallon tank, 18" tall. I have 2-250watts metal halide's in a custom reflector hood.
How far should I mount the hood above the tank? So I dont have a problem with heating.....????
Thanks
;) Matt

[golfish]

Matt,
That's a tought one. Most manufactures recommend 8" and that's what I would suggest. But if your putting the bulbs in a hood that sits on the tank then your going to probably have a heat issue, maybe. Make sure you have lots of fans and keep the room cool.

[PerryinCA]

Originally posted by golfish
Matt,
That's a tought one. Most manufactures recommend 8" and that's what I would suggest. But if your putting the bulbs in a hood that sits on the tank then your going to probably have a heat issue, maybe. Make sure you have lots of fans and keep the room cool.

ditto.

[naser]

tripple ditto

[VPWoodwork1]

Hi Matt,
You should make sure that the canopy is 12" - 14" tall from the top of tank to inside top of canopy. This will give you your 8" min. If you install 2 - 4" fans, one on each end with them blowing out, this will help a great deal with the heat. That is what I recommend to my customers.

Glenn
www.aquarium-stands.com

[naser]

ive noticed that if the canopy is 11 inches tall. the mogul socket brings the bulb to the perfect 8 inches..

[VPWoodwork1]

Yes that is about right with alot of the MH's. With the slightly taller canopy, this helps out with preventing the heat transfer to easily. The height along with 2 - fans is what I would recommend.

Glenn