Recommendations on exhaust fans

[jimbojones5678]

Hey all,

 

I would like to hear your opinions on what inlet and exhaust fans you would choose for a space 1.0x1.0x2.8m housing a 6ooW HPS

I have purchased 250mm exhaust fans (standard bathroom jobs) but am reconsidering whether I should be running something better.

 

Jimbo

[Luke Skywalker]

You should definitely be getting something better. Bathroom fans not only move bugger all air but aren't designed to run 24hrs a day like we need them to.

 

With a 600w you should be considering a 150mm centrifugal fan or at least a large continuous rated axial fan.

[jimbojones5678]

Gday Luke,

 

Thanks for the advice - I had a look at them and was wondering if I could get away with a 100mm like this one...

It still moves enough I think - but will it move enough when I add a Carbon filter? I was going to put one in each 1x1x2.8 chamber.

 

The CEN100 will move 165 cubic metres per hour or 45L per sec of air and will do this even through ducting.

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[F420]

you need a pretty damn strong fan to suck through a Carbon filter.

With the fans, I was using fans called "turbo hydro 25mm" they are one of the best fans out there. Although your probably wanting an inline fan if your running carbon filters.

 

[jimbojones5678]

I went to the hydro shop and chose a 150mm Uniflex centrifugal fan coupled with a 300ml 150mm carbon filter and he threw in the ducting.

I also grabbed a 600W HPS parabolic for a nice price.

 

Think that will do?

Jimbo

[F420]

what did that set you back??

[jimbojones5678]

All up $800. $280 for the light and $500 for the exhaust system. $20 for air stones and shit...

I managed to get a new NZ Hydro Truncheon Nutrient meter on eBay for $51 too and two 2700l/ph water pumps for $105 (brand new 12 months warr)- laughin!

 

Jimbo

Edited February 3, 2007 by jimbojones5678

[Pacaman]

One option you have if you want a bathroom fan is to get the use pick up one of the Heller extractor fans. They are sqare rather than round and are designed like one of those squirrel cage fans that I see all over the net (centrifugal rather than axial fan). They move a heap of air, act as a light trap and also have a thingy for hooking up ducting. These do run 24x7 without issues, i've had one runnin g for nearly 2 years to vent out a 60x40x160 cm space that has a 400 watter in it (also run a seperate intake fan). This maintains my temps without a prob and ensures very good air turnover which is necessary in our lovely summers.

 

cheers

 

Paca

 

PS The fan was an 8 incher and was $50 at Bunnings, they also had a 10 incher for $10 more.

[jimbojones5678]

Thanks but that sort of fan wouldn't have the balls to run through a carbon filter and that is going to be a necessity.

[pipeman]

you need a pretty damn strong fan to suck through a Carbon filter.

Although your probably wanting an inline fan if your running carbon filters.

 

wrong way around. its centrifugal fans you want for use with carbon filters. a big inline fan would work, but a centrifugal is the right tool for the job.

 

PS - Bathroom fans are fine as well if you're not using a filter just get a ballbearing one.