The Zamnesia Carbon Filter Air Purifier is an aluminium-housed inline carbon filter that scrubs odours out of your grow tent's exhaust air before they reach your hallway, your neighbours, or the postman. Premium Australian activated charcoal does the actual work — your extractor fan pulls air through the carbon bed, and what comes out the other side smells like, well, nothing much.
Why the Zamnesia Carbon Filter Air Purifier earns its spot in the tent
Carbon filters are the only honest way to deal with grow tent smell. Ozone generators mask, sprays cover, but activated charcoal actually traps the volatile compounds at a molecular level. The Zamnesia Carbon Filter Air Purifier uses Australian-sourced activated charcoal — Australian carbon is generally denser and more uniform than the cheaper Chinese stuff you'll find on a lot of budget filters, which means more adsorption surface per cubic centimetre and a longer working life before saturation.
The aluminium housing matters more than it sounds. Galvanised steel filters rust at the flange seams once humidity climbs, and a rusty filter in a sealed tent is exactly the kind of long-term annoyance you want to avoid. Aluminium stays put for years. Run this inline with a matching extractor fan, hang it from the included rope ratchets, and you've got a closed odour loop.
Which size: 100 mm or 150 mm?
Two diameters, and the right one depends entirely on your tent footprint and the fan you're pairing it with.
| Size | Diameter | Length | Airflow | Suits tent |
|---|---|---|---|---|
| 100 mm | Ø100 | 250 / 300 mm | 280–300 m³/h | 60×60 and 80×80 |
| 150 mm | Ø150 | 300 / 350 mm | 520–600 m³/h | 100×100 and 120×120 |
Start here: if you're running a 60×60 or 80×80, the 100 mm is the one. Anything 100×100 and up, go straight to the 150 mm — undersizing a filter on a bigger tent means restricted airflow and a fan that's working harder than it should.
What's in the box with the Zamnesia Carbon Filter Air Purifier
Zamnesia ships this as a near-complete install kit, which is genuinely useful — most filters at this price arrive bare and you end up paying separately for the bits that make it actually hangable. Here's what you get:
- Carbon filter (aluminium housing, Australian activated charcoal bed)
- Cotton pre-filter sleeve, pre-installed
- Spare pre-filter sleeve (the one you'll swap to in 6–12 months)
- Silicone connector for joining to your ducting
- Rope ratchets for hanging the filter from your tent bars
The spare pre-filter sleeve is the detail we appreciate. The cotton sleeve catches dust and large particles before they hit the carbon bed, which extends the life of the actual charcoal by months. Having the second one in the box means you're not scrambling to source a replacement when the first one greys out.
Specifications
| Brand | Zamnesia (growshop own-brand) |
| Housing | Aluminium |
| Carbon | Premium Australian activated charcoal |
| 100 mm diameter | Ø100, 250 or 300 mm length |
| 100 mm airflow | 280–300 m³/h |
| 100 mm tent match | 60×60, 80×80 |
| 150 mm diameter | Ø150, 300 or 350 mm length |
| 150 mm airflow | 520–600 m³/h |
| 150 mm tent match | 100×100, 120×120 |
| Included | Filter, cotton pre-filter (installed), spare pre-filter, silicone connector, rope ratchets |
How the Zamnesia Carbon Filter Air Purifier compares to alternatives
Inside the Zamnesia growshop range, the closest comparison is the Falcon carbon filter by Vanguard Hydroponics. The Falcon is a premium pick — heavier carbon load, longer expected service life, priced accordingly. The Zamnesia own-brand sits at the practical end of the same shelf: same operating principle, Australian charcoal rather than an unspecified source on cheaper alternatives, aluminium housing rather than galvanised steel, and the install accessories included. If you're kitting out your first tent and want a filter that does the job without overspending, the Zamnesia is the one we'd pick. If you're running a perpetual harvest cycle and want maximum service life, the Falcon makes sense.
| Filter | Carbon source | Housing | Accessories included | Best for |
|---|---|---|---|---|
| Zamnesia Carbon Filter Air Purifier | Premium Australian | Aluminium | Pre-filter + spare, silicone connector, rope ratchets | First-time growers, single-tent setups |
| Falcon (Vanguard Hydroponics) | Premium activated | Aluminium | Sold separately | Long-cycle, high-demand grows |
Pairs with a matching inline extractor fan in the same diameter — 100 mm filter to 100 mm fan, 150 mm to 150 mm. Don't mix diameters; you'll either choke the airflow or leak unfiltered air around the connector. Ducting and a duct clamp finish the loop.
How to install the Zamnesia Carbon Filter Air Purifier
- Hang the filter from the top tent bars using the included rope ratchets. The filter goes inside the tent, fan outside — that's the standard pull-through setup.
- Slide the cotton pre-filter sleeve over the filter body if it isn't already installed (it ships pre-installed, so usually just check).
- Attach the silicone connector to the filter flange.
- Connect your ducting from the silicone connector to the intake side of your extractor fan.
- Run ducting from the fan's outlet to your exhaust point — window, ceiling vent, or wherever you're venting.
- Match diameters end to end. A 100 mm filter wants 100 mm ducting and a 100 mm fan; a 150 mm filter wants 150 mm.
- Power on the fan, check for leaks at every joint, and let it run. The filter is working from minute one — no break-in needed.
Honest limitations of the Zamnesia Carbon Filter Air Purifier
A few things worth knowing before you click buy. Carbon filters lose effectiveness over time — typically 12–24 months of continuous use, less if your tent runs hot and humid. There's no maintenance schedule in the traditional sense; you swap the cotton pre-filter sleeve when it visibly greys out, and you replace the whole filter when odours start escaping. Humidity above 70% accelerates carbon saturation, so if you're running heavy late-flower with no dehumidification, expect a shorter service life. And one more thing: the filter is heavy. Make sure your tent bars are rated for the weight — most are, but cheap import tents sometimes aren't.
Frequently Asked Questions
Does the Zamnesia Carbon Filter Air Purifier come with a fan?
No — the filter ships with the cotton pre-filter, a spare, a silicone connector and rope ratchets, but the extractor fan is sold separately. Match the fan diameter to the filter: 100 mm fan with the 100 mm filter, 150 mm with the 150 mm.
Which size do I need for an 80×80 tent?
The 100 mm version. It pushes 280–300 m³/h, which is the right airflow band for 60×60 and 80×80 tents. Going up to the 150 mm on a small tent is overkill and creates negative pressure issues.
How long does the carbon last?
Typically 12–24 months of continuous use, depending on humidity and how strong the odours are. The cotton pre-filter sleeve gets swapped earlier — usually every 6–12 months — which is why Zamnesia includes a spare in the box.
Does the filter go inside or outside the tent?
Inside the tent, with the fan outside (pull-through configuration). This is the standard setup for the Zamnesia Carbon Filter Air Purifier and gives you the cleanest odour control — all air leaving the tent passes through the carbon bed before hitting the fan.
Will it eliminate smell completely?
When sized and installed correctly, yes — properly matched filter and fan in a sealed tent should give you near-zero detectable odour outside the tent. Leaks at duct joints or an undersized filter are the usual culprits when smell escapes.
Can I run it horizontally instead of vertical?
Yes. Carbon filters work in any orientation as long as the air is pulled through the carbon bed. Horizontal mounting can save vertical space in shorter tents — just make sure it's properly supported by the rope ratchets.
Last updated: April 2026
