the cool tube trouble??

hey guys i have a cool tube but i guess my fans arent doing there job... exactly wut size fans do i need to COOL my cool tube so there's no heat from the 400w hps?? is this possible... and do you need intake and exhaust on the cool tube or just exauhst here's my current setup tell i move in may... my gehto cool tube is not sealed because it gets to hot when it is... um the bush in the back is 5 weeks into 12/12 got about 3-4 weeks left hoping to get at least an oz dry. the others are 10 days into 12/12 all from clone let me know wut you guys think

http://www.ledwholesalers.com/store/index.php?act=viewProd&productId=658

you need to pull the air, not push it.

oh ya forgot the pics

uhmm i already have a 6" inline duct booster pulling the air out but it dont do the job would this one be different then the one i got with plastic blades??

if you get a fan like the one I showed you, you'll get no heat. you can also get one at home depot as well.

I'm venting a 600watt with a 400cfm fan. but I only have the fan on 50%.... thats less than the fan I showed you at full power. but, if you are looking to spend more money, this will assure you will have no heat. http://www.htgsupply.com/Product-GrowBright-6in-High-Velocity-Inline-Fan.asp

I just bought a 400 watt HPS with a cool tube but I have nothing to cool it with. Here's the set up: http://i.ebayimg.com/00/$(KGrHqMOKpgE0VR2CW)GBNZber2dzg~~0_3.JPG How will this run without a cooler? Should I buy one or will it be ok without?

Hmmm, don't know why that link isn't working. Try again. http://i.ebayimg.com/00/$(KGrHqMOKpgE0VR2CW)GBNZber2dzg~~0_3.JPG

My bro uses a cool tube when he grows. He just uses a 6 inch duct booster to pull air across the bulb and a dayton blower to clear the room. I always tell him I hate him when I see his canopy temp at 74. Bastard!!!