Canfan And Canfilters

[Hrethic]

So from a Youtube search, this one

http://www.youtube.com/watch?v=-A1u4bcAjlA

it looks like you're suppose to have this within whatever grow tent/room you have. This troubles me, as most people using a room or a tent like to have all of their space for their plants, not some huge ridiculous peice of metal and coal.

My question is, can this thing be used on the outside of the tent, after the air passes over the light, and passes outside through ducting? I realize this would effectively render the prefilter useless unless you placed it inside of the open cavity, instead of on the outside like the youtube video shows. It only occurred to me once he says you place the INtake side within the filter: i had always just imagined it blowing in it, not pulling air from it. Has anyone ever switched it?

 

[jonezin]

I just switched mine around. I had mine set up like this originally: Can 66 inside of tent, ducting to my hood, ducting on other side of hood out roof of tent, 8" can fan mounted outside of tent. It was sucking into the can 66 inside the tent through the hood then through the 8" can fan. But I needed more room in the tent so after seeing pictures of other people blowing into the can filters I asked a similar question to yours. Here is the thread I posted if you'd like to read it.

I now have my can 66 outside of the tent and it is working great.

 

[ItsAllOver]

You can definitely use the CanFilter that way, and without the prefilter at all. It will, of course, shorten the life of the filter, though.
I would suggest against having the hot air going through the fan, but that's not the end of the world, just shortens the life, again.

 

[FreezerBoy]

I would suggest against having the hot air going through the fan,

Unless you're doing AC, hot air has to go through the fan. Otherwise there's no cooling.

The scrubber goes at the end of run. Which end is optional.

 

[In Vino Veritas]

the white cloth only helps extend the life of the carbon if you suck air through the can-filter.. if you're pushing air through you're just causing more resistance..

centrifugal fans work better pulling air rather than blowing it.

 

[ItsAllOver]

If you put the fan before the light, no superheated air, for lack of a better term, goes through the fan. Think:

Filter->Fan->Ducting->Light Hood->Ducting Out

That way you're pulling through the filter which is the most efficient use of the fan, and blowing air through the hood, stripping the heat away, and no superheated air from the bulb goes through the fan. The air will surely be hot from the heat of the growroom itself, but the hot growroom air going through the hood gets even hotter as it passes over the bulb on its way out of the room, and you will be able to avoid having that air going through your fan.

Ya'naw'mean?