Nothing matches all of those filters.
Neutralising gels and blocks
Set out in a pot, working on the air in the room
Sprays, aerosols and liquids
For a quick knock-down or a misting line
Fan units and ozone generators
Disperse neutraliser, or treat the air in the duct
ONA Air Filter – In-Line Grow Room Odour Control
- Type in-line duct housing for ONA Blocks
- Installation cut into round extraction ducting
- Access sealing hatch for loading blocks
- Use with ONA Block 170 g
- Power required none
Grow Gadgets Ozone Generator – 10-50mg/h Odour Control
- Ozone output 10–50 mg/h, adjustable dial
- Supply 110–240 V AC, 50/60 Hz
- Installation plugs into a wall socket
- Function odour, bacteria and mould control
- Type portable plug-in ozone generator
- Power 7 W
- Noise 26–34 dB
- Room size up to 30 m³
- Safety run only with extraction on
- Weight 0.17 kg
- Dimensions 10.4 x 9.5 x 8.3 cm
AirOzone Replacement Elements – Ozone Generator Plates
- Plates 1
- Fits generator AirOzone 150 (AIR150)
- Generator airflow 600 m³/h
AirOzone Ozone Generators – Grow Room Odour Control
- Duct diameter 150 mm
- Ozone plates 1
- Max airflow 600 m³/h
- Max power 10 W
CleanAir Pro Inline Duct Ozone Generator – For Grow Rooms
- Spigot size 250 mm
- Power, level 1 33 W
- Power, level 2 40 W
SureAir Neutra Breeze Fan – Odour Control Fan For Jars
- Air output 1.8m³/min (57 CFM)
- Fan type ball-bearing centrifugal HD fan
- Fan speed 1,800rpm
- Weight 1kg
- Power supply input 100–240V 50/60Hz, output 12V 0.6A
- Plug UK 3-pin
- Fits SureAir 1 litre gel jars and 5 litre gel buckets
- Compliance CE, RoHS
Uvonair UV-80H In-Duct Ozone Generator – Odour Control
- Duct fitting 8in (200mm)
- Coverage 5,000-10,000 cu ft (150-300m³)
- Output settings Low = 1 bulb, High = 2 bulbs
- Maintenance side service door for lamp access
- Warranty 1 year
- Lamp life change annually or after approximately 8,000 hour...
- Type in-duct UV ozone generator
- Control HIGH / LOW / OFF switch
ONA Air Breeze Fan Unit – For Gel Pots and Pails
- Airflow 45 CFM
- Power consumption up to 15 W
- Warranty 1 year, limited (ONA)
- Weight 1 kg
Uvonair CD Series In-Duct Ozone Generator – Odour Control
- Duct size 8 in (20 cm)
- Room size up to 600 m³
- Cells 1
- Ozone output 1,100 mg/h
ONA Air Cyclone Fan – 20L Gel Tub Odour Control
- Airflow 121 CFM (approx. 206 m³/h)
- Coverage up to 464 m² (5,000 sq ft)
- Speed control variable, push-button switch
- Power draw 12 W
- Fits ONA 20-litre gel tub
- Placement ambient room use, sited outside the grow space
- Warranty 1 year, limited (ONA)
- Weight 1.2 kg
Carbon filters
Clean the air on its way out
Rhino Hobby Carbon Filter – RC412 Odour Control
- Max airflow 350 m³/h
- Carbon bed 30mm
- Carbon type RC4-12 virgin Australian
CarboAir 60 Carbon Filters – Strong Odour Control
- Max airflow 1350 m³/h
- Carbon bed 60mm
- Carbon type Virgin activated carbon
AC Infinity Duct Carbon Filter – Grow Tent Odour Control
- Max airflow 357 m³/h
- Carbon bed 38mm
- Carbon type RC412, 1200+ IAV
RAM AirTECH LITE Carbon Filter – For Grow Tents
- Max airflow 250 m³/h
- Carbon bed 35mm
- Carbon type Machine-compacted Australian
VIVOSUN AeroZesh Carbon Filter – Grow Tent Odour Control
- Max airflow 448 m³/h
- Carbon bed 38mm
- Carbon type RC412, 1200+ IAV
CarboAir 50 Carbon Filter – Grow Room Odour Control
- Max airflow 410 m³/h
- Carbon bed 50mm
- Carbon type Virgin activated carbon
Mountain Air Carbon Filter – For Grow Rooms and Tents
- Max airflow 740 m³/h
- Carbon bed –
- Carbon type Collie coal, steam activated
AC Infinity Refillable Carbon Filter Kit – For Grow Tents
- Max airflow 357 m³/h
- Carbon bed 38mm
- Carbon type RC412, 1200+ IAV
CarboAir Inline Carbon Filter – For Grow Tents
- Max airflow 900 m³/h
- Carbon bed –
- Carbon type Virgin activated carbon
CarboAir 65 Carbon Filter – 10 Inch Grow Room Filter
- Max airflow 2650 m³/h
- Carbon bed 65mm
- Carbon type Virgin activated carbon
RAM Pro Active Carbon Filter – Grow Tent Odour Control
- Max airflow 170 m³/h
- Carbon bed 38mm
- Carbon type RC412 virgin Australian
RAM AirTECH MIDI Carbon Filter – Inline Charcoal Filter
- Max airflow 1150 m³/h
- Carbon bed 50mm
- Carbon type Australian, machine-packed
RAM AirTECH HEAVY Carbon Filter – For Grow Room Setups
- Max airflow 2000 m³/h
- Carbon bed 60mm
- Carbon type Australian, machine-packed
Fox Pro Premium Carbon Filter – For Large Grow Rooms
- Max airflow 1900 m³/h
- Carbon bed 50mm
- Carbon type RC4-12 virgin Australian
Carbon Garden Carbon Filter 1300m³/h – 12in for Grow Tents
- Max airflow 1300 m³/h
- Carbon bed 40mm
- Carbon type CGV-4 virgin activated carbon
Mammoth Carbon Filter – For Grow Tent Setup
- Max airflow 420 m³/h
- Carbon bed 50mm
- Carbon type RC 48 Australian virgin
Mammoth Lite Carbon Filter – Grow Room Odour Control
- Max airflow 350 m³/h
- Carbon bed 38mm
- Carbon type RC 48 Australian virgin
CarboAir 75 Carbon Filter – High VOC Odour Control
- Max airflow 6000 m³/h
- Carbon bed 75mm
- Carbon type Virgin activated carbon
CarboAir 100 Carbon Filter – 100mm Bed for Large Grow Rooms
- Max airflow 3800 m³/h
- Carbon bed 100mm
- Carbon type Virgin activated carbon
The full range
Odour control beyond the carbon filter
A well-sized carbon filter deals with the air leaving your tent through the extraction run — it does nothing for the smell that escapes when you open the zip, or that clings to a grow room outside the filtered chain. That's the gap ONA products fill. ONA Gel comes in 426g tubs (£9.45) for a single room, 3.8kg (£42.95) for a whole grow room, and 20kg (£154.95) for anything commercial — the gel neutralises odour molecules rather than masking them with fragrance.
For a lighter touch, ONA Spray (250ml) and ONA Blocks (170g) suit smaller spaces or topping up between gel changes. A Grow Gadgets Ozone Generator (£29.95) is a stronger option for an empty room between grows — never run ozone in an occupied space. OCD Deo-Max Aerosol (£8.49) is the quick-fix option for a sudden smell after opening the tent.
Sizing your setup
Match gel size to room size, not tent size — the gel treats the air in the space around your extraction, so a 3.8kg tub for a spare bedroom is usually plenty. If your filter itself is undersized or the carbon is tired, that's a different problem: check our carbon filters range and the fan and filter sizing guide first. Free UK delivery over £99, or call 020 3488 0419 for advice on odour control for your specific room.