Ventilation & Air Filtration

Grow tent ventilation kit: inline extractor fans, carbon filters, aluminium ducting and silicone connectors for 100mm and 150mm setups. Shop seven pieces from Vanguard Hydroponics, VDL and the new Zamnesia range — everything you need to pull stale air out, scrub the smell, and keep temps in check. Shipping across the EU since 1999.

Grow Tent Ventilation — Buying Guide for 100mm and 150mm Setups

Grow tent ventilation is the loop of air that moves through your tent: a fan pulls air out, a carbon filter scrubs the smell on the way through, and flexible ducting connects the lot. Get this right and you control temperature, humidity and odour in one go. Get it wrong and you'll cook your plants, fog up your tent, or tip off the whole stairwell.

Two sizes cover almost every home grow: 100mm for tents up to roughly 80x80cm, and 150mm for 100x100cm and bigger. Pick your duct diameter first — fan, filter and ducting all have to match, or you'll be wrestling with reducers and leaks.

Match Your Components — 100mm vs 150mm

One honest note on the table above: the Falcon and VDL "125mm" SKUs fit standard 150mm fan flanges with the FanGuard silicone connector — the European hydroponics market has used 125mm and 150mm fittings somewhat interchangeably for years. If you're ordering a 150mm fan, order the Falcon 125/300mm filter and the VDL 127mm ducting to match.

What's In The Range

• Inline extractor fans — the Zamnesia Inline Duct Fan covers the basics for a 100mm setup, the Vanguard In-line Extractor Fan 100mm is the compact workhorse, and the Vanguard Extractor Fan TT comes in 100mm and 125mm with twin-speed control and a pre-attached cable (zero wiring).
• Carbon filters — the Falcon Carbon Filter from Vanguard Hydroponics scrubs odour with Australian virgin activated carbon, rated 300–500 m³/h, available in 100/200mm and 125/300mm.
• Flexible ducting — the VDL Aluconnect (5m, available in 102mm and 127mm) for long runs, and the Zamnesia Flexible Ducting 2m for short hops between filter and fan.
• Connectors — the Zamnesia FanGuard Silicone Connector seals fan-to-filter and fan-to-duct joints without metal-on-metal vibration, which is where most of the rattle in a cheap setup comes from.

How to Choose Your Grow Tent Ventilation Kit

If this is your first tent, buy the simplest combo: a 100mm Vanguard fan, the Falcon 100/200mm filter, 2m of Zamnesia ducting, and two FanGuard silicone connectors. That's it. Mount the filter inside the tent at the top, connect it to the fan with a short duct run and the silicone connector, then exhaust the fan outside or into a well-ventilated room. Pull air out the top, let fresh air passively enter through the lower vents.

If noise matters — bedroom grows, thin walls, light-sleeping flatmates — the Extractor Fan TT is the one we'd pick. The twin-speed switch lets you run flat-out during lights-on and drop to the lower setting at night. The pre-attached cable means you plug it in and walk away. The FanGuard connector also kills most of the vibration travelling down the ducting, which is the second-biggest noise source after the fan itself.

For 100x100cm tents or warm rooms, step up to 150mm. The extra air volume keeps leaf temperature down in summer and gives you headroom when you add a carbon filter (filters restrict airflow by roughly 25%, so always size up rather than down). Pair a 150mm fan with the Falcon 125/300mm filter and the VDL 127mm ducting.

When in doubt, start with the 100mm Vanguard + Falcon + Zamnesia ducting combo. It handles 90% of home grows under 80x80cm and you can upgrade the fan later without replacing the filter or ducting.

From Our Counter

We've been kitting out grow rooms in Amsterdam since 1999, and the single most common ventilation mistake we see is people buying an undersized fan to save 30 euros, then adding a carbon filter and wondering why the tent's running at 32°C. A carbon filter eats airflow. Buy the fan one size up from what the tent "needs" on paper, and you'll never have to revisit it. The Zamnesia silicone connectors are a small detail that punches above their price — proper seal, no metal rattle, and you can break the kit down for cleaning without cursing.

Frequently Asked Questions

What size inline fan do I need for a 80x80 grow tent?

A 100mm inline fan moving 180–250 m³/h is the standard pick for an 80x80cm tent. Add a carbon filter and you'll lose roughly 25% of that airflow, so the Vanguard 100mm or Extractor Fan TT 100mm both fit the brief. For 100x100cm or larger, jump to 150mm.

Do I need a carbon filter with my grow tent extractor fan?

Yes, if you don't want the smell escaping. Without a carbon filter, everything inside the tent vents straight out through the ducting and your room (or stairwell) gets the full aroma. The Falcon Carbon Filter pairs with both 100mm and 150mm fans and uses Australian virgin activated carbon rated 300–500 m³/h.

How do I connect the fan, filter and ducting together?

Carbon filter inside the tent at the top, fan attached to the filter outlet, ducting from the fan to the exhaust point. Use the Zamnesia FanGuard Silicone Connector at each joint — it seals better than duct tape and kills vibration noise. Clamp the ducting onto the connector with a worm-drive jubilee clip.

Is the 100mm Vanguard Extractor Fan TT quiet enough for a bedroom?

On the low setting, yes — it's the one we recommend for bedroom grows. The twin-speed switch lets you run it harder during lights-on and drop the speed at night. Adding a silicone connector between fan and ducting kills most of the residual vibration noise.

Can I use 100mm ducting with a 150mm fan?

You can but you shouldn't — necking down from 150mm to 100mm chokes the fan, drops airflow and makes it noisier. Match the ducting to the fan: 100mm fan gets the VDL 102mm Aluconnect, 150mm fan gets the 127mm. The Zamnesia 2m ducting is sized for 100mm setups.

Last updated: April 2026