cool tube ? extraction

[Opie Yutts]

I tried cooling my cooltubes both ways... ...They were significantly cooler w/ air being pulled through them.

Well then, I guess there it is. I'll take actual examples over theories any day. Thanks.

Opie Yutts Reviewed by Opie Yutts on 02-22-2008. cool tube ? extraction Hey guys n gals .. I am gonna buy a cool tube for my setup .. what fan would i need to sufficiently cool a 400w hps light ? and would the fan be pushing the hot air out of the tube or sucking it ..in other words does the fan go before or after the light .. im having a dumb moment and i reckon its extraction hence why they are called extraction fans lol i just need someone to verify lol regards :) hope someone answers :) Rating: 5

[Opie Yutts]

for some reason i thought there was a little fan built into the end of the hood were the duct starts?

Nope.

And yeah, just plumb them into your ducting, somewhere before the fan.

[CashandPrizes]

well then upgrade here i come! :thumbsup: