Climate control
by Cyclone
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The Cyclone Clip-on Fan is a compact 15W circulation fan that clamps directly onto tent poles, shelving, or any edge up to around 4 cm thick. With a 15 cm blade diameter and a tilt-adjustable head, it keeps air moving across your canopy — reducing hot spots, discouraging mould, and giving your plants the gentle breeze they actually need. Small, quiet, and dead simple to set up.
Stagnant air is the silent killer of indoor grows. Without circulation, moisture pools around your canopy, temperatures spike near your light, and the microclimate between your leaves becomes a breeding ground for mould and mildew. We've seen growers lose entire harvests to botrytis that started in a single corner where the air wasn't moving. A clip-on fan won't replace your extraction setup, but it fills the gap between your intake and exhaust — the bit that actually touches your plants.
The Cyclone 15W is the fan we'd point you towards if your tent is 60x60 or 80x80. It draws just 15 watts, so it barely registers on your electricity bill even running 18 hours a day. The clamp is properly spring-loaded — not the flimsy plastic type that slides off a tent pole at 3 AM and lands on your seedlings. We've had that happen with cheaper fans. This one grips and stays put.
One honest limitation: it's a single-speed fan with no oscillation. For a small tent, that's fine — you angle the head, point it where you need it, and the 15 cm blades push enough air to create movement across a 60x60 canopy without battering your plants. If you're running a 120x120 or larger, you'll want two of these on opposite corners, or step up to an oscillating wall-mount fan.
| Spec | Value |
|---|---|
| Brand | Cyclone |
| Power | 15W |
| Blade Diameter | 15 cm |
| Mounting | Spring-loaded clip clamp + flat base |
| Tilt | Adjustable head angle |
| Speed Settings | Single speed |
| Oscillation | No |
| SKU | GS0023 |
| Best Tent Size | 60x60 to 80x80 cm (1 fan); 100x100+ (use 2) |
Complete your climate control setup: pair this clip-on fan with a carbon filter and extraction fan kit for full air management. If you're running a larger tent, grab a second Cyclone and mount them on opposite corners — two small fans beat one big one for even coverage across the canopy.
After 25 years selling grow gear from Amsterdam, we've noticed the same pattern: new growers spend serious money on lights and nutrients but forget about air. Then they wonder why their leaves are curling, why there's condensation on the tent walls, or why that fuzzy grey patch appeared overnight. Nine times out of ten, the answer is airflow — or rather, the lack of it.
A fan like this Cyclone does two things that matter. First, it breaks up the boundary layer of stagnant air that forms around each leaf. That boundary layer traps heat and moisture right against the leaf surface, which slows transpiration and invites fungal problems. A light breeze strips that layer away and lets the plant breathe properly. Second, it equalises temperature across your tent. Without circulation, the area directly under your light can be 5-8°C warmer than the corners. The Cyclone won't fix a fundamentally undersized extraction setup, but it distributes the air your extractor is already moving.
The weight of this fan is noticeable compared to the ultra-cheap clip fans you'll find elsewhere — the motor housing has some heft, and the clamp is metal-reinforced. That's actually a good sign. The lightweight ones vibrate, rattle against tent poles, and eventually shake themselves loose. This one stays where you put it. The cable is standard length — about 1.8 m — so plan your power strip placement accordingly.
| Feature | Cyclone 15W Clip-on | Typical Budget Clip Fan | Oscillating Wall Fan |
|---|---|---|---|
| Power | 15W | 5-10W | 30-50W |
| Blade Diameter | 15 cm | 10-15 cm | 25-40 cm |
| Oscillation | No | No | Yes |
| Mounting | Spring clamp + base | Plastic clip | Wall bracket |
| Noise Level | Low | Varies (often rattles) | Moderate |
| Best For | 60x60 to 80x80 tents | Seedling trays, small spaces | 100x100+ tents, open rooms |
For a 60x60 or 80x80 tent, yes — 15W moves enough air to break up stagnant pockets and create visible leaf movement. For tents 100x100 cm or larger, use two Cyclone clip-on fans on opposite sides for even coverage.
Yes. It comes with a stable flat base, so you can stand it on a shelf, table, or the floor of your tent. Clamp mounting is better for saving floor space, but the base works well on any flat surface.
No, the Cyclone 15W is a fixed-direction fan with an adjustable tilt head. You point it where you need it and it stays there. For oscillation, you'd need to step up to a wall-mounted fan.
Quiet enough to run overnight without bothering you in the next room. It produces a low, consistent hum — nothing like the rattle you get from cheaper plastic clip fans that vibrate against tent poles.
The spring-loaded clamp opens wide enough for most standard tent poles, which are typically 16-19 mm diameter. It also grips shelf edges and horizontal bars up to roughly 4 cm thick.
Most growers run circulation fans during the entire light cycle and often during dark periods too, since humidity tends to spike when lights go off. At 15W, the electricity cost of running it round the clock is negligible.
One Cyclone 15W handles a 60x60 or 80x80 tent. For a 100x100 tent, we'd grab two and mount them diagonally opposite each other. For a 120x120, two is the minimum — three is better if your canopy is dense.
Last updated: April 2026
