 Fans for Halogins
In the process of doing a DIY hood that will house 2 x 250w M/H's and
2 x 110 VHO Super Actinics.
What type of fans should I purchase for them and how many would I need? I was thinking only 2 fans, 1 for each of the halogen bulbs, because it's my understanding the the VHO lamps run pretty cool.
Do I need AC or DC fans? How many RPM's should I be looking to get, is it possible to get a fan with too much RPM?
Thanks in advance everyone 
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75g Soon to be Reef, Born 01-22-2008,
2 - 250w 14000k South Pacific Sunlight Metal Halides,
2 - 110w VHO Super Actinics,
ASM G-1 In-Sump Protein Skimmer,
200w Heater, 80lb Base Rock w/10lb Live Rock,
80lb Sand, 30lb Live Sand, 29g DIY Sump, Fuge.
Fish:
(1) Yellow-tail Damsel
(1) Six Line Wrasse
Clean Up Crew:
(16) Blue-legged Hermits
(5) Scarlet Crabs
(1) Emerald Crab
(20) Astrea Snails
(10) Trochus Snails
(10) Cerith Snails
(5) Nassarius Snails (sm)
(5) Nassarius Snails (lg)
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i use two DC computer fans on mine, as there is not much moisture where they are.try and get the highest CFM you can 
