Need a little help with my setup!!

1st off Hello to everyone!! Glad to be here Things look to be on the up&up!! I have some problems I have run in to!! This is my 1st time ever doing this!! I am going to buy a Homebox size large! 39,5 x 39,5 x 78 I want to buy a HPS CoolTube 600watt! I have a ORG DWC 8 plant pot setup! Now this is where I run in to problems!! The air Intake ventilation and the exhaust ventilation!! I am not sure on the fan's I need! Does the intake need a bigger fan or the Exhust? Also I was going to run the cool tube by itself! Homebox makes a Flange so you can add a hole to your tent! I want to do this and just do a stright shot threw the Cooltube and out!! So If I go that way I need another fan lol!! Ok Now for A question? Can I run my filter like this and will it work like this? Filter,Fan,threw the Cooltube and exit out? Or No I should keep my cooltube as a stand alone!! The Fan's is what got me I am lost!! Also if I buy a HPS 600 watt Cooltube can I run a 400watt bulb in it? as later I might want to put it in a smaller tent!! Thanks guys for any help Not sure if anyone has this setup!!

Exhaust should always be larger than intake to keep negative pressure. I'd keep the cooltube standalone. You can run the light if you have the right ballast for it. Learn more about the intake and exhaust:

Ventilation Grow Guide

Ok Thanks for your reply!! I looked over the link you said to look at!! It help some Ty!!! OK Now that I am in a better I think Better mind set on this all!! Here is what I want to know Maybe I will be right lol!



Can I use a 4" for my intake? At 172 CFM That should be good I think?
Now the CoolTube Not sure if I should go with the 400 or 600 watt But I would I think I would set them up the same? A 6" rated at 449 FPM that should be enough to cool her off!! and I was thinking another 6" for the Filter! Here are some links to the filter and 6" fan there a kit!! And the other intake fan! Hope I got this right!! What do you guys think about the cooltube should I stay at 400 or 600watts in a 39.5x39.5x78 tent!! anyway here are them links!

http://cgi.ebay.com/Vortex-Powefans-6-PROfilter-Carbon-Filter-Air-Scrubber_W0QQitemZ220370734817QQihZ012QQcategoryZ3186QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.com/4-Vortex-Centrifugal-Inline-Exhaust-Fan-Duct-Blower_W0QQitemZ150303656559QQihZ005QQcategoryZ3186QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Now I know I can get the Filter and fan at a lower cost!! Just trying to figure out the setup then I will look for discount $$!! Thanks all again!

now did some more looking around whats better for growing?
High Output Compact Fluorescent Or HPS system?

What U guys think will this work?