Extractor Fan TT from Vanguard Hydroponics
The Extractor Fan TT is a twin-speed inline extraction fan designed to keep small grow tents properly ventilated without filling your room with noise. Vanguard Hydroponics built this one with a pre-attached cable, two speed settings, and a wall-mount bracket that pops on and off in seconds. Available in 100mm and 125mm sizes, it handles airflow for tents up to about 80x80cm without breaking a sweat — or your eardrums. If you're looking to buy an extractor fan TT that works straight out of the box, this is the one we recommend to most home growers who visit our shop.
Which Size Do You Need?
The 100mm fits tents up to 60x60cm with a single plant, while the 125mm suits spaces up to 80x80cm or smaller tents with dense canopies. Picking the right one depends on your tent size and ducting setup.
| Variant | Duct Diameter | Best For | SKU |
|---|---|---|---|
| 100mm | 100mm (4 inch) | Micro tents and propagation spaces up to roughly 60x60cm | GS0016 |
| 125mm | 125mm (5 inch) | Small to mid tents around 80x80cm or 60x60cm with heavy canopy | GS0033 |
Running a 60x60 tent with a single plant? The 100mm does the job and keeps things compact. Got a slightly bigger space or you're pushing more plants into a small footprint? Go 125mm. We'd pick the 125mm in most cases — the extra airflow headroom means you can run it on low speed more often, which keeps noise down even further. Upsizing your fan is almost always smarter than maxing out a smaller one.
Specifications
The Extractor Fan TT runs on two speed settings with a pre-attached cable and quick-release wall mount bracket included in every box. Here are the full details.
| Spec | Value |
|---|---|
| Brand | Vanguard Hydroponics |
| Model | Extractor TT (Twin Speed) |
| Available Sizes | 100mm / 125mm |
| Speed Settings | 2 (Low / High) |
| Cable | Pre-attached, ready to plug in |
| Mounting | Wall mount bracket with quick-release |
| Noise Level | Among the quietest in its class |
| Category | Climate Control / Extraction |
Complete your ventilation setup with a carbon filter matched to your duct size — without one, extraction just moves smells around rather than eliminating them. A clip-on oscillating fan inside the tent pairs well too, keeping air moving across the canopy while the TT handles exhaust. Consider browsing our climate control category and our carbon filters range to get everything in one order.
Why Your Grow Tent Needs Proper Extraction
Extraction removes excess heat, humidity, and stale air from enclosed grow spaces, preventing the conditions that lead to mould and stunted growth. Without it, even a small tent becomes a problem within days.
Stale air degrades grows gradually. Humidity creeps up past 70%, condensation forms on leaves, and suddenly you've got mould spreading through a canopy you spent weeks training. Temperature spikes follow because there's no airflow pulling hot lamp heat out through the top of the tent. CO2 gets depleted around the stomata and photosynthesis slows to a crawl. Your plants look fine for a while, then they just... stop growing.
We've seen growers blame nutrients, blame genetics, blame their lights — when the actual problem was a tent with no extraction fan or a cheap bathroom fan duct-taped to a port. The Extractor Fan TT from Vanguard Hydroponics addresses this properly. According to data published by the EMCDDA on indoor cultivation environments, stable airflow and humidity control are consistently identified as critical factors in preventing crop loss in enclosed growing spaces. The twin-speed motor lets you dial back airflow during early veg when plants are small and humidity isn't a battle yet, then crank it up during flower when dense buds trap moisture. That flexibility matters more than raw power in a small tent. Running a fan flat out 24/7 creates negative pressure problems — tent walls sucking in, light leaks opening up, and noise that makes the whole setup pointless if you're after discretion.
The honest limitation? This fan is built for small spaces. If you're running a 120x120 tent or anything with serious wattage overhead, you'll want something with more cubic metres per hour. But for a 60x60 or 80x80 setup — which is what most home growers actually run — the TT handles it without drama.
How to Install the Extractor Fan TT
Installation takes under ten minutes with no tools beyond a screwdriver for the wall mount bracket. Follow these steps to get the fan running.
- Choose your exhaust port — typically the top port on your grow tent, since hot air rises. Match the port diameter to your fan size (100mm or 125mm).
- If using the wall mount bracket, fix it to a flat surface near the tent's exhaust port using the included mounting hardware. The quick-release design means you can detach the fan body without unscrewing the bracket — handy for cleaning or repositioning.
- Alternatively, connect the fan inline using ducting. Slide one end of your aluminium or acoustic ducting over the fan's intake side and secure with a jubilee clip. Connect the other end to your tent's exhaust port.
- If you're running a carbon filter (and you should be), attach it inside the tent to the fan's intake side using ducting. Air flows: carbon filter inside tent, through ducting, into fan, out through exhaust ducting.
- Plug the pre-attached cable into a standard socket. No wiring, no junction boxes — it's ready to go straight from the box.
- Set the speed switch to low. Start there. If your tent walls are barely pulling inward and humidity stays below 60% during lights-on, low speed is enough. Switch to high if you notice condensation on tent walls, temperatures climbing above 28°C, or humidity pushing past 65% during flower.
- Check your tent's passive intake vents are open. The fan pulls air out, but fresh air needs a way in. Most tents have mesh-covered flaps at the bottom — leave at least 2 open.
