Carbon filter + hood = confused

Nice man!!!

nevergoodenuf said:

I prefer to attach the fan directly to the filter and push the air through the filter. I personally wouldn't want the excess carbon dust blowing through my light fixture. It will also give you more room in the tent.

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This is not as effective at filtering the smell from the testing we have done. When you're sucking the air you're pulling all of the air from a huge surface area, the whole filter. When you reverse that all you're sucking is the 6" or 8" fan hole and then blowing it into the filter where some escapes through cracks and so forth. Air takes the path of least resistance so some doesn't get filtered at all. Our rooms smelled when we try that method. When we put the fan on top of the filter sucking we get no smell at all.

I'm having similar issue I had my scrubber and hood on same fan and ducting. Was worried about carbon dust and crap blowing over my light. So after I've decided not to do this. I only have one exhaust port going out the room. Can I put scrubber and fan connected to a Y with a separate fan and duct for my hood. More simply put can I exhaust scrubber duct and hood duct out the same hole? Any info would be big help! Thanks

Not a big fan of glass covered hoods. At the least you'll want to make sure it's sealed perfectly

Pulling air through it will immediately make the glass and bulb dirty, reducing the light output pretty significantly. If it was me, I'd take the glass off.

After attaching the fan to the filter with self tapping screws and taping that joint with foil tape, to where it is blowing scrubed air, hang that fucker as high as you can.
Filter/fan combo>ducting>hood/s>ducting>bye bye.

Loose carbon hitting bulb? Wtf?

Project J Bud said:

I'm having similar issue I had my scrubber and hood on same fan and ducting. Was worried about carbon dust and crap blowing over my light. So after I've decided not to do this. I only have one exhaust port going out the room. Can I put scrubber and fan connected to a Y with a separate fan and duct for my hood. More simply put can I exhaust scrubber duct and hood duct out the same hole? Any info would be big help! Thanks

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I think you're worried about things you shouldn't. I would just do it like I posted above. It works everytime. No fucking carbon dust dude! Lol its just the way most everyone hooks up a charcoal filter ever since they came out
But if you insist on putting two exhausts through one hole, i suppose you could put a damper on each exhaust(backdraft damper, cheap)before connecting to a Y.

Right on dude, thanks for the info. I do tend to worry too much. I'm somewhat new to the whole seen so just trying to get it all figured out. Just want to be successful and get it right the 1st time. Appreciate the response.

I like to go filter/fan/silencer/light/ducting for max flow

filter/light/fan/silencer for best light life

light/fan/silencer/ducting/filter for max room in the grow

all of them work just sometimes you need to adjust your fan and filter size for what way round your running it, obviously check for leaks all the time, joints love to start pissing air or sucking air over time, tape is your friend

I realize I don't have a hood, so this isn't the apples to apples, but this diagram is how I ended up using my fan and filter in my short grow cab. I first had the filter sitting on the ground in the cabinet but sucking from the floor did not work. Once I moved it outside and began drawing from the top temps dropped by 8 degrees F and noise was reduced with the added insulation.

You pull thru the filter and push thru your hood that way if hood has any leaks the air is pushed back into the tent and not outside. The filters are also meant to be pulled thru which is why there is a dust filter on outside not inside the dust will clog carbon with larger particles which reduces life of filter

As a retired HVAC tech, I can tell you it's never a good idea to restrict a fan on the exhaust side. All restrictions (filter, hoods, etc.) should be on the intake side.

boshuter said:

As a retired HVAC tech, I can tell you it's never a good idea to restrict a fan on the exhaust side. All restrictions (filter, hoods, etc.) should be on the intake side.

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100% correct as well as pushing hot air thru the filter at that and if your pulling air thru the hood your fan is heating up and will reduce its life if constantly running at upwards of 100%

100°

Who says you cant run 2 fans....1 to get the heat out of the hood asap blowing....another exhausting outside

boshuter said:

As a retired HVAC tech, I can tell you it's never a good idea to restrict a fan on the exhaust side. All restrictions (filter, hoods, etc.) should be on the intake side.

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But doesnt the moisture and humidity hurt the fans motors