Cooling a 250watt HPS

Will a 6" inline duct fan be enough to cool a 250 watt system? Here's the link to the item I'm talking about:
http://www.htgsupply.com/viewproduct.asp?productID=46447

I have a 80cfm blower fan on my 400w. not the best but works and I'm using 4" duct.

stumps said:

I have a 80cfm blower fan on my 400w. not the best but works and I'm using 4" duct.

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80cfm? Isn't that almost a 120mm computer fan?

it's the fan from a bath fan. small squrrile cage fan. had a 240cfm same type was great.

your best bet is prolly going to be to go out and get yourself a stanley blower or lasko blower to convert into an inline fan then go to your local craft store and get a top to an oil lamp for a cool tube. thatll run ya bout 50-70 bucks. because in my experience, those type of inline fans that your showing are pretty weak. Ive got a 250 hps and I just got a 170cfm inline fan with carbon filter for $120 on ebay and that fucker keeps my box just 1 degree warmer than the room.

or skip all that and get a can fan. duct fans do suck. But not enough. imo. There was just a thread on pushing or pulling air. last I checked pulling was way in the lead. I push But will be changing my setup soon.