Installing a big ass carbon filter...

[desant]

My filter is BIG, size of a wolkswagen

Hmmmmmmmmmmm which way do i use it.. i want it at the END of air sucking system...

But i noticed some ppl have these filters INSIDE the grow room, sucking air and sending it further

I think thats a wrong?

SO basicly what i am asking is - should the filter be sucking air thro OUTSIDE surface

or

fan pushing air INTO the filter and out?

See what i am sayin?

My filter is like this:

http://www.hydrolab.co.uk/ebay/Carbon-Filters/HL-CF160/images/carbon-filter-large-01.jpg

 

[mrdizzle]

thats not a thru filter, that the flange . a little confused , but the filter should be first than the fan than outside.

I leave the 14mountain air right on the floor 12inch vortext sitting on it then a 12inch elbow then 12in ridged ducting out.

 

[desant]

Hmmmmmmmmm my filter has only ONE connection, like i said, like on the pic.

I noticed some ppl use such filter inside the grow area and SUCK air with it

I want to blow air thro it , so that filter is the last thing: first is HPS air cooling --> into ducting --> into fan --> into ducting --> into the filter

 

[PuReKnOwLeDgE]

Suck air through the filter, blowing air will reduce the life of the carbon since you are skipping the prefilter and clogging your carbons pores. Put the filter somewhere high in the room, to suck out the extra heat.

 

[desant]

There is no heat problem in my room - i have air cooled HPS

And my gro box isnt that big to put this 2 ft big ass filter in it

 

[fjällhöga]

.... are skipping the prefilter and clogging your carbons pores .....

exactly what he said ...

 

[PuReKnOwLeDgE]

Then you need a smaller filter that suits your needs

 

[PuReKnOwLeDgE]

Then you need a smaller filter that suits your needs, if you blow through it it will work, but not as long as using it properly. See how dirty prefilters get? Thats a hydro setup, no dirt or anything blowing aorund in there.

 

[desant]

hmmmmmmmmmmmmmmm didnt even kno u need a pre filter ...


But u saying it will work?

I have a small tidy set up

 

[Phillthy]

you can suck or blow...lol.

i only use mine to recirc the air in my room and scrub it. i pull warmer, stinkier air from the ceiling and blow it through the filter.

 

[desant]

I am a little confused about the ducting connections:

It goes in SPIRALS with small diameter in between. There is a METAL spiral going all the time, how the hell do i connect this shit??





Phillthy K+

 

[FreezerBoy]

Hose clamps. Any hardware store will have them in the ducting area.

 

[AKDrifter]

You can go either way if need be. I did exactly what you are talking about with my old cab.

I had my cab with a 400w hps, 6" duct to the vortex fan which was sitting on the filter about 8' away from the cab, sucking through the cooled hood in the cab blowing through the can 50.

Yes there is a pre filteron the scrubber, just make sure you are not blowing dust through the inside. Go to home depot and buy a piece of furnace/ac filter it will cost about $5, then install that in the intake of you're cab.

My cab was raised off the floor by 3" and all the air intake was through the bottom of the cab. I drew a 12x20 square while building it and filled the square with 2" holes to allow for good air flow, then just hot glued a 12x20 air filter over that area so all my air that came into the cab was filtered before hand. I just used the same type of paper filter that you install in a central air conditioning system.

The carbon filter worked just fine, they are really a low tech piece of gear. very simple design, blow stinky air through activated carbon I can not really see any harm in going either way with the air flow unless you are really blowing a lot of dust into the filter or exceding the rated cfm , but that is very easy to avoid.

 

[ScrubNinja]

The thing with blowing into a carbon filter is that you are using and creating positive pressure. Any small gap you missed, or a tiny pinhole in the ducting will now push untreated air out. You can do it but as mentioned you will need a pre filter inside the filter instead of outside. And if your ducting is compromised you will have smell.

If you get creative, and have enough room, you can mount your carbon filter and fan outside the cab, and still suck and have negative pressure which is the good pressure. You will need a garbage container or something of this nature that will fit the filter inside comfortably, and have a lid. Cut a hole in the top and bottom, connect your exhaust duct, then have your filter inside the container connected to the duct, then on the far hole you have your fan. So everything is sucking, you have no positive pressure, and no smell if your ducting has holes or you miss a gap with tape. I have also seen this done on here with oversized ducting, same principle.

It is all about pressure, positive or negative. I set this up last night - there is a pc fan sealed well to the top of the filter, then I have a duct mount bolted to the pc fan, and the ducting you see fitting on there is just resting there. I put a tab of tape on to keep the angle of the duct right, but otherwise it is unsealed. Due to the right use of pressures, no smell can occur. It can only leak filtered air back into the grow. It's just there to guide the air out and temps are fine so I can't be bothered.

 

[LadyLargely]

Exactly scrubs. Negative Pressure is the way to go. Its easy on the fan and filter and much simpler to run a successful leak-proof venting scheme on.

It is possible to fit quite an oversize filter into a small space. Just be creative with the mounting. My filter is also 2 feet+ in length and over 10 inches in diameter.



Crammed right up into an otherwise unusable corner space. I could have saved even more space by flipping it around and bolting the fan right up to the hole in the ceiling, mounting the filter underneath. But I was lazy and my DIY carbon filter was much easier to build when I could mount it to the fan using gravity.

It would even be possible to have only the filter inside the room, with the fan on the outside down the line providing negative pressure through a large-diameter remote hose.

Don't give up on your bigass filter, bigass filters are the shit. Get as big of one as you can in your space, then enjoy not bothering to change it for like 5 years!

 

[SuperConductor]

I have a filter on both ends and it works well, just put an oldish one on the exit duct and the new one on the inside. Eases my paranoid mind and reduces noise coming from the exit duct too. I'm guessing it probably makes the fan work harder but it's less noise than with just one cf.