I found this light at HTG just wanted to see what you guys thought about it? http://htgsupply.com/viewproduct.asp?productID=49333
If you have a smaller space your better off going with a seperate ballast and light to keep temps in check. Something like this if your on a budget, but upgrade to a cool tube or vented reflector. $165 + reflector upgrade http://htgsupply.com/viewproduct.asp?productID=47981 or spend a little more and get this digital ballast, $230 +reflector upgrade http://htgsupply.com/viewproduct.asp?productID=48930 600w is only a few dollars more, $250 + reflector upgrade http://htgsupply.com/growlights.asp?categoryID=1&subcategoryID=101&typeID=58 you will also need to get a 6" fan
Yeah, you want a remote ballast. Cool tube is a separate ventilation path that draws cool air into the sealed reflector hood and out the exhaust, taking the heat from the lamp out with it.
It allows air from out side of the grow space, or even inside it, to be used to cool the heat generated by the light, This allows you to place the light closer to the canopy and use your lumens more efficiently
no problem plantlightinghydroponics.com has the best prices I've seen on fans I'd send a link but looks like their sites not working at the moment. go to ventilation the valuline 6" fan is a great deal