Inline fan ?

Gotta say: if you want a quiet fan don't buy a growbright fan from htgsupply. I got their 170cfm 4" fan + filter combo and it sounds like the bathroom fan from hell--it is powerful though! I've read that buying a fan speed controller will probably do you the most good as far as noise goes (with a few drawbacks such as possible humming and reduced fan life)--this is what I plan on doing when I get the money. You also have other options such as blocking off some of the air, putting a filter on it, or building a muffler.

I don't know of any high cfm fans that aren't annoyingly loud without having some modification. Are you sure you need something that big? Maybe you could get away with running high power CPU fans with a 4-pin-to-AC adapter.

btw I heard sunleaves makes some good inline fans, but haven't tried 'em yet so I can't vouch personally. They do look nice, though. Their fans are made from plastic so they are lighter than the steel growbright monster I have sitting in my closet.

http://www.sunleaves.com/detail.asp?sku=SW604#

Hope this helps!

Sunleaves WindTunnel ?Anybody using these.I'll be running 600watts,so yeh,im gonna need atleast a 4".

Hey again, I did a little bit of reading and you might wanna check out the vortex brand. Expensive, but you get 172 cfm for only 49 db! Can't say much about the size cause there's nothing there for scale. The fan I have now looked small on the website but was much bigger than the picture led me to believe.

http://www.growlightexpress.com/fans-blowers-87/inline-fans-88/4-vortex-inline-fan-213.html

I have a 6" vortex and a 6" econline and not a huge noise diff FYI

use insulated ducting and the fan noise will be a non-issue. its the buffeting air not the fan itself making all that racket

crud said:

use insulated ducting and the fan noise will be a non-issue. its the buffeting air not the fan itself making all that racket

Click to expand...

Yep. My 400CFM fan is quiet by itself but when hooked up to my cheap flexible ducting gets very loud. Insulated will deaden most of the sound.