Affordable washable intake filter for 4x4 grow tent

DEVGRU_420

DEVGRU_420

Well-Known Member
Should work, I’m fixing to start putting an ac filter over the passive intake screens on my tents but I like this idea too. You running a booster fan for your intake?
 
DEVGRU_420 said:
Hey guys I was looking around for an affordable washable intake filter for my 4x4 grow tent. Should the filter below work? Should one work or do yall think I would need two, one on each side of the tent? Thanks!!
Click to expand...

Yeah it’ll work for your needs just fine.
 
DEVGRU_420 said:
Hey guys I was looking around for an affordable washable intake filter for my 4x4 grow tent. Should the filter below work? Should one work or do yall think I would need two, one on each side of the tent? Thanks!!
Click to expand...
Why wound you need 2?
 
I would be running it passive. I use an 8 inch vortex s-line for my exhaust on a speed dimmer so I would just adjust that depending on the airflow coming in thru the intake filter. I was thinking two so the air would be distributed more evenly but that's prolly not necessary. Thanks guys!
 
I use those filters. Or ones similar. Takes like a minute to scrub them clean and a couple hours in the sun or in front of a small fan to dry them.
 
I tried something similar but there was too much negative pressure at the level of ventilation I wanted. I've found pantyhose work great, and you can take them off and rinse them and immediately just put them back on. The bigger problem are the built in vents, hair will suck in through those if they aren't covered with something. I use cut to fit furnace filter material for those. It's good to experiment though, if you find something that works great let us know! I would love something slightly finer than pantyhose that doesn't restrict airflow too much.
 
That is just a cheap Chinese car air filter. Being a rebuilder of carburettors and engines I can report that they filter nothing. I have seen numerous engines with heavily worn piston rings/bores and carbs that are covered with a sandy film after only a month of use because of cheap filters like these, they don't take out the fine particles. You can improve them by painting them in engine oil and letting the oil go sticky. TBH, you'd do just as well with some nylon stockings stretched over a tube.

If it were the K&N or Pipercross version of that filter then I'd say go for it, but they are 5 times the price, but will last forever.
 
That will work but I just make my own with filter material and a piece of ducting. I have 3 bottom ducts filtered this way. Passive intake. They catch everything. The filter material is washable. I need to move the speed controller to the exhaust fan outside the tent so I can turn it off before opening the door. You can see stuff entering the tent once the doors open because the fan is sucking it in and it's not filtered when it's coming in through an open door. I despise dirty weed. Filtering intakes is mandatory in my opinion.

Inside

intake1.jpg


Outside

intake2.jpg
 
xtsho said:
That will work but I just make my own with filter material and a piece of ducting. I have 3 bottom ducts filtered this way. Passive intake. They catch everything. The filter material is washable. I need to move the speed controller to the exhaust fan outside the tent so I can turn it off before opening the door. You can see stuff entering the tent once the doors open because the fan is sucking it in and it's not filtered when it's coming in through an open door. I despise dirty weed. Filtering intakes is mandatory in my opinion.
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Got a link or name for that material?

The nice thing is many types can be used dry or oiled for better filtration.

For now I'm going to slap a furnace filter on a card board box connected to the intake.
 
1212ham said:
Got a link or name for that material?

The nice thing is many types can be used dry or oiled for better filtration.

For now I'm going to slap a furnace filter on a card board box connected to the intake.
Click to expand...
That works really well, and the cool thing is, if you still are getting too much negative pressure, you can add more sheets of filter to the other sides of the box, does that make sense? More surface area. I did this when I first set up a tent and I ended up using the filter material on 4 sides of the box-there was very little negative pressure, about the same as pantyhose. I might start doing that again...
 
Rurumo said:
That works really well, and the cool thing is, if you still are getting too much negative pressure, you can add more sheets of filter to the other sides of the box, does that make sense? More surface area. I did this when I first set up a tent and I ended up using the filter material on 4 sides of the box-there was very little negative pressure, about the same as pantyhose. I might start doing that again...
Click to expand...
Just what i was thinking. That filter material can also be removed from it's cardboard frame, cut to size or wraped around things. Or I could check ebay for filter material....
 
1212ham said:
Got a link or name for that material?

The nice thing is many types can be used dry or oiled for better filtration.

For now I'm going to slap a furnace filter on a card board box connected to the intake.
Click to expand...

I got mine at Lowes or Home Depot. I can't remember which.

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