Climate control
by Vanguard Hydroponics
We'll only email you about this product — no marketing.
The Falcon carbon filter is an activated carbon air scrubber that eliminates odours from your grow tent before they reach the rest of your home. Built with Australian virgin activated carbon packed between aluminium end caps, it connects to your extraction fan and cleans outgoing air at 300–500 m³/hr depending on the size you pick. Two variants cover small to medium setups — the 100/200mm for tighter spaces and the 125/300mm when you need more airflow capacity.
The right carbon filter matches your extraction fan's airflow rating. Go too small and the filter chokes your fan; go too large and air passes through the carbon too quickly to scrub properly. Here's how the two Falcon variants break down:
| Variant | Duct Diameter | Filter Length | Max Airflow | Best For |
|---|---|---|---|---|
| GS0018 | 100 mm | 200 mm | 300 m³/hr | 60x60 to 80x80 cm tents with a single extraction fan |
| GS0036 | 125 mm | 300 mm | 500 m³/hr | 100x100 to 120x120 cm tents or multi-plant setups |
Quick rule of thumb: calculate your tent's volume in cubic metres (length x width x height), then multiply by 60. That gives you the minimum m³/hr you need from your fan-and-filter combo. A 120x120x200 cm tent is 2.88 m³ — multiply by 60 and you get 172.8 m³/hr, well within the 100mm Falcon's capacity. But if you're running hot lights or live in a warm climate, bump up to the 125mm. Oversizing slightly is always smarter than running a filter at its absolute limit.
The Falcon carbon filter uses RC 412 Australian virgin activated carbon — a specific grade known for its high adsorption surface area, which is what actually traps odour molecules. Here are the key specs across both models:
| Specification | 100/200mm (GS0018) | 125/300mm (GS0036) |
|---|---|---|
| Duct diameter | 100 mm | 125 mm |
| Filter body length | 200 mm | 300 mm |
| Maximum airflow | 300 m³/hr | 500 m³/hr |
| Carbon type | RC 412 Australian virgin activated carbon | RC 412 Australian virgin activated carbon |
| End caps | Aluminium | Aluminium |
| Carbon bed depth | Standard | Standard |
| Pre-filter | Included (washable outer sleeve) | Included (washable outer sleeve) |
| Manufacturer | Vanguard Hydroponics | Vanguard Hydroponics |
Complete your ventilation setup with an inline extraction fan matched to your Falcon's duct size — a 100mm or 125mm inline fan and aluminium ducting are the essentials. If you're building a full tent from scratch, check our complete grow tent kits, which bundle tent, lighting, ventilation, and filtration together so nothing gets forgotten.
We get asked about carbon filters more than almost any other piece of grow equipment, and the conversation always starts the same way: "Do I really need one?" Short answer: yes. Without a carbon filter on your extraction system, every smell inside your tent — soil, nutrients, plant matter, humidity — vents straight into your room, hallway, or through your windows. It's not subtle.
The Falcon handles this by forcing extracted air through a bed of activated carbon before it exits the tent. Activated carbon works through adsorption — odour molecules physically bond to the carbon's surface. The RC 412 Australian virgin carbon Vanguard uses hasn't been recycled or reprocessed, which means a cleaner, more consistent pore structure and a longer working life before the carbon becomes saturated. You can feel the difference in weight compared to cheaper filters that use recycled carbon — the Falcon is noticeably lighter thanks to those aluminium end caps, but the carbon bed itself is dense and tightly packed.
The honest limitation? Every carbon filter has a lifespan. Depending on humidity, temperature, and how hard your fan is pushing air through, expect 12–18 months of effective odour control before the carbon needs replacing. Running your tent above 70% relative humidity will shorten that life significantly — moisture clogs the carbon pores. Keep your humidity in check and the Falcon will do its job quietly for well over a year. Compared to something like the Rhino Pro or the Can-Lite, the Falcon sits at a lower price point while still using virgin carbon — it's the filter we'd point you towards if you're running a single tent and don't want to overspend on industrial-grade capacity you'll never use.
The single most common mistake we see is mismatching filter and fan sizes. Someone buys a 125mm Falcon and tries to connect it to a 100mm fan with a reducer. Technically it works, but you're bottlenecking airflow and the fan has to labour harder, gets louder, and burns out sooner. Match your diameters. If your fan is 100mm, get the 100/200mm Falcon. If it's 125mm, get the 125/300mm. Simple.
Second thing: don't run your carbon filter without the extraction fan turned on. Passive airflow through carbon is almost useless for odour control — you need active negative pressure pulling air through the carbon bed at a consistent rate. The Falcon is rated for 300–500 m³/hr of forced airflow, not gentle wafting.
Typically 12–18 months with normal use. High humidity above 70% and heavy odour loads shorten the lifespan. Washing the pre-filter sleeve monthly helps extend it. Once you start noticing smells escaping despite the fan running, the carbon is saturated and it's time for a new filter.
You can, but we wouldn't recommend it. A 120x120x200 cm tent needs around 170+ m³/hr minimum, and the 100mm model handles up to 300 m³/hr — so it technically works. But factor in duct bends, a loaded carbon bed, and summer heat, and you'll be running it near capacity. The 125/300mm model at 500 m³/hr gives you comfortable headroom.
Yes. A washable outer sleeve is included. It wraps around the filter's mesh exterior and catches dust, hair, and larger particles before they clog the activated carbon. Wash it every 3–4 weeks in lukewarm water and let it air dry fully before putting it back on.
Virgin activated carbon — like the RC 412 Australian carbon in the Falcon — is made from raw materials and hasn't been used before. Recycled carbon has been reactivated after previous use, which leaves residual contaminants and an inconsistent pore structure. Virgin carbon has a higher adsorption capacity and lasts longer. It's the main reason the Falcon outperforms budget filters that cut costs with recycled carbon.
The filter itself makes no noise — it's a passive component. Noise comes from your extraction fan. A properly sized fan running at moderate speed through a correctly matched Falcon filter is quieter than an undersized fan straining through a restrictive filter. Match your duct diameters and you'll keep things quiet.
Yes, though inside mounting is more effective. When mounted inside, the filter operates under negative pressure — air is pulled through the carbon. Outside mounting means air is pushed through, which can cause small leaks at duct joins to release unfiltered air. If space forces you outside, seal every connection with aluminium tape and clamps.
The Rhino Pro uses a thicker carbon bed and is built for larger, more demanding setups. The Falcon is lighter (aluminium vs steel end caps), more affordable, and sized for small to medium tents. Both use virgin activated carbon. If you're running a single tent under 120x120 cm, the Falcon does the job without the extra cost.
Last updated: April 2026
