*Attention Growers* Advice Needed

I have a new set up coming along and have most of everything figured out.

My question lies with my blower/fan selection.

I have a 4' W x 26" D x 3.5' H sealed box. It will run (2) - 250w HPS lights with undetermined filter and unknown number of plants.

I have had my eye on the 5" Fan on this site http://www.hvacquick.com/products/residential/Bathroom-Ventilation/Remote-Fans-for-Bath/SP-TD-Series-Inline-Fans

I have liked this because I have very limited space to put a blower and need it quiet.

To the point, any other suggestions on exhaust and maybe filter too.

Thanks and + rep for any help!

look on you tube for home made carbon filters..

pet store and autoparts store is all you need for that filter. cant help on the fan thing though sry.

bump. bump.

multiple hard drive fans might work but i dont think just one intake fan and one exhaust fan will do it for that size box..someone might see my comment and chime in on your fan issue. hope that helps your bump bump. and i just checked out your link on fans,im gonna check in to gettn some fans from there. they have some decent prices. i would disregard the hard drive fan comment cause i didnt see that link..lol

Thanks Angel Fish. I am hoping to hear some alternatives if there are some.

Anyone know of good place to find 5" flexible ducting.