Potential Cooling issue?

Ive got a 400w hps and the area im gonna use to grow is 3 foot 11 inches wide, 2 foot 2 inches deep and 5 foot 11 inches high. However above the 6 foot area is a shelf that has about another foot and a half of space. In irc it was suggested heat may be my largest issue. I was hoping to have 2 8inch or so fans and an exhaust fan a little smaller up above on that shelf. Maybe having the 2 fans tilted upward a little to try and push some of the heat off the plants. But im just looking for suggestions this will be my first hydro grow and first grow in 10 years. Im tryin to keep the first one cost effective. So please suggestions.

get a 4" vortex in line fan and ventilate out of the room, you'll be fine, also the plants will like the constant draw of ambient CO2.

greasemonkeymann said:

get a 4" vortex in line fan and ventilate out of the room, you'll be fine, also the plants will like the constant draw of ambient CO2.

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The cheapest ive found one of these fans is 79$ which is quite expensive im lookin for something a little more cost effective

Are there any other suggestions out there?

use a simple 4" computer fan pulling air out of the room?

Found a cheap 4" Bilge blower thanks

you should be able to fit a min. of 5 plants. Smoke one half your first harvest and sell the rest. this should recoup all your cash easily. next harvest is all yours. lights-exaust and STRAIN are the most important things to worry about. Cover them 3 issues and life will be good. Hit me with any questions hopefully i can help. Good luck.