what size fans to get

[Ford Fairlane]

I have atatched a diagram of my room, I am not sure what size intake and exhaust fans to get. will the cheapo cpu fans get enough airflow through? the intake fan really needs to be in the spot where I have inidcated for stealth reasons, ( I would like to put the exhaust there too if possible, but obviously high on the wall)..

Thanks

Puka

[ConvexConepiece]

A PC fan for a 1.5x1.5m (or 3x3 depending whether half is sealed) room?

 

Your gonna need a centrifugal fan for the exhaust. 150mm minimum.

 

You could get away with inlines but when the smell starts and you need a filter it won't pull well through it.

 

For intake either have no fan (passive intake(s)) or a smaller inline fan will do well. Still something more than a PC fan...

 

Goodluck

[pisspotgrower]

+1 for the above

 

I thing i have found in my short few years growing is airflow is just as important as light, medium, and nutrients......try to cheep out on 1 and ya wont get the best from any of em

[Ford Fairlane]

ok thanks guys. I will have to get some $$ together for a couple of decent fans. At the moment I open the door for a couple of hours each day and try to blow the stale crappy air out, but the plants are obviously suffering ... your advice is much appreciated..

[headhigh]

make sure you have a fan inside the room aswell

 

in the 1.5m area you should be able to get at least 2 in there, consider hanging a fan from one of the sides as well.

 

Cheapest way to do it spend the dollars on a decent exhaust ~200 then just place a normal fan infront of your intake (on the inside).

 

Good luck! just keep it on the down low and you'll be sweet

[Ford Fairlane]

make sure you have a fan inside the room aswell

 

in the 1.5m area you should be able to get at least 2 in there, consider hanging a fan from one of the sides as well.

 

Cheapest way to do it spend the dollars on a decent exhaust ~200 then just place a normal fan infront of your intake (on the inside).

 

Good luck! just keep it on the down low and you'll be sweet

 

What do you think of this one. It's from a bathroom shop.. thought I might be able to save a few dollars by moving away from hydro shops

 

200 mm INLINE EXHAUST FAN

 

200 MM Exhaust Fan

 

used for Bathroom / Laundry

 

Fan Capacity: 236 l/s

 

Volume: 850 CMH

 

RPM: 2300

 

60 watts

 

 

 

thanks

puka

[headhigh]

yea that should do, but only if you arent running a carbon filter, if you get one of them you'll need to fork out for a centrifugal

[Ford Fairlane]

ok, sorry for my ignorance,Can you only atatch acarbon filter to a centrfugal fan?? There is nothing available for inlines?

[Ford Fairlane]

Oh and BTW I have two 400wHPS lights. I was planning on using one for veg and clones and one for budding.. But after reading a few posts around here maybe a 400W HPS would be overkill for a mum and her pups. what lights do you all recomend for a mother and babies? CFL's seem popular, but the range is rather huge..??? any advice would be good.. Oh sand should I put my second 400w HPS in the 1.5mx1.5m room? or will that be overkill?? Edited May 11, 2011 by puka

[ConvexConepiece]

A good inline fan might have a chance,

 

but a bathroom fan would likely die trying.

 

You need to either scale back to a micro grow or stop being so tight and fork out for decent equipment (even if it's second hand).