ONA Air Cyclone Fan Odour Control Unit

Turns a Tub of ONA Gel Into Whole-Room Odour Control

The ONA Air Cyclone sits directly on top of a 20-litre ONA gel tub and actively drives neutralised air out into the space. Gel alone relies on ambient airflow and only really treats the area immediately around it; the Cyclone pushes 121 CFM of ONA-charged air across an area of up to 464 m² (5,000 sq ft), and does it on 12 watts.

Key Benefits

• Covers up to 464 m² (5,000 sq ft) from a single 20-litre gel tub
• 121 CFM airflow actively distributes neutraliser instead of waiting for room air movement
• Five fan speeds to match output to the size of the space and the odour load
• Only 12 W draw — negligible running cost even continuously
• Runs quietly, so it suits occupied buildings and shared spaces
• Drops straight onto a standard ONA 20 L tub with no modification

Odour Escaping Beyond the Grow Space

Carbon filtration handles extracted air, but odour still escapes through doorways, loft hatches and around the tent itself. A passive gel tub sat in the corner barely touches a large room. Driving that same gel through a fan turns it into an active whole-room system, treating the ambient air rather than one corner of it.

How to Use

• Remove the lid from a 20-litre ONA gel tub and seat the Cyclone unit on top
• Position it in the room the odour escapes into — typically outside the tent, not inside it
• Start on a low speed setting and increase only as needed
• Run continuously during the flowering period, when odour output peaks
• Replace the gel tub when the surface dries out and scent output drops