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Old 08-31-2019, 03:38 PM
Senior Member
Join Date: Jan 2016
Posts: 345
Default Has anyone tried airbox or in-line filters ?

Presh and active air make a inline filter with an intake and exhaust.
Then there’s airbox which has replacement filter inserts.

I lose almost 20 inches of height with traditional carbon filter.

Has anyone used an airbox or inline filter.

I’ll post a link of inline because all are called inline but these two are different and made different ways.
I’ve read some filters last months then some 2-3 years.My last filter is 3 years old and still working and smelling a bit stale but it is removing skunk odor.
Phresh® Inline Filters | Phresh Filters

Last edited by Indi; 08-31-2019 at 03:41 PM.
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Old 09-01-2019, 03:30 AM
Join Date: Feb 2018
Posts: 73

Growers house sold me a used light bulb...the 160.00 eye hort blue...fuckerz
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Old 09-01-2019, 04:19 AM
Join Date: Feb 2011
Location: michigan
Posts: 1,814

ive used the airbox filters before.
seemed to work well.
i liked the idea of replaceable filters.
and the inline design.

i have one now but not in use.
ive been thinking of hooking it up, but it hasnt been a necessity.

how could you tell the bulb was used?
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Old 09-01-2019, 07:18 PM
Senior Member
Join Date: Jan 2016
Posts: 345

When you used the airbox did it eliminate odors or how did it compare to basic types of filters?
What size or version did you get?
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Old 09-02-2019, 05:09 AM
Join Date: Feb 2011
Location: michigan
Posts: 1,814

i thought it worked as well as the big can type.
id have to check but i think it is a airbox 4.
i wanted it oversized, and use reducers from 12"? to 10 or 8.
the slower the air moves through it the better it will work.
also, i believe you can cook the filters in the oven to refresh them a little.
havent tried yet myself.
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Old 01-24-2020, 12:39 AM
Junior Member
Join Date: Jan 2020
Posts: 3

I live in Canada and found a source close, was wondering if anyone has had any experience with anyone of these carbon filters on this list? This will be for a 4x4 grow room in a garage that will vent outside.
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Old 01-24-2020, 07:44 PM
Senior Member
Join Date: Apr 2011
Posts: 905

If you are in a place where the smell of your plants can get you arrested, then you want the best filters you can make work in your space.

I think the OP (Indi) said he had a headroom issue that it would help with?

I have made my own carbon filters before with activated aussie carbon from eBay and they worked OK. You do what you have to do.

My mindset whenever possible would be:
Good filters.
Big filters.
Lots of filters.

Moisture in the carbon reduces it's efficiency. That's why heating it in the oven if it starts to lose it's effectiveness would make it work better.
That is not the only factor though.
The carbon has a very rough, porous surface. That increases surface area and helps it scavenge smelly particles from the air as it passes over. Eventually, these little pockets and traps in the surface become filled with stuff and it loses the ability to scrub. Heating in the oven will not help with that. It is important to use pre-filters whenever possible.

If your freedom depends on good filtration, make it a high priority . . . whatever kind of filter you use.
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