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Odour Control
Odour control products are essential for managing and eliminating smells in indoor growing environments. As plants develop, especially during flowering, strong odours can build up quickly, making effective control systems an important part of any grow setup.
At Acorn Horticulture, we supply a wide range of odour control solutions in the UK, including carbon filters, odour neutralisers and air treatment products. Whether you are growing in grow tents, using grow lights or running hydroponic systems, these products help keep your environment clean, controlled and discreet.
ONA Liquid 922ml Fresh Linen & Original UK | Odour Neutralising Liquid
£19.50 incl. Vat
ONA Liquid 922ml is a professional odour neutralising solution designed for grow rooms, grow tents, hydroponic systems, drying rooms, smoking areas, commercial environments, and indoor spaces. Available in Fresh Linen and Original fragrances, this powerful liquid odour eliminator destroys unwanted smells at the molecular level rather than simply masking them, making it ideal for maintaining fresher indoor environments.
- ✔ Available in Fresh Linen and Original scents
- ✔ Neutralises odours rather than masking them
- ✔ Ideal for grow rooms, drying rooms & hydroponics
- ✔ Suitable for ONA Mist Dispenser systems
- ✔ Safe for continuous indoor use
LumiFresh Mist Diffuser Ebony & Maple UK | Ultrasonic Aroma Diffuser
£19.99 incl. Vat
The LumiFresh Mist Diffuser is a stylish ultrasonic aroma diffuser designed to freshen indoor spaces while creating a relaxing atmosphere. Available in elegant Ebony and Maple wood-effect finishes, this ultrasonic mist diffuser combines cool mist humidification, aroma diffusion, ambient LED lighting, and timer functionality, making it ideal for homes, grow rooms, offices, bedrooms, and indoor environments.
- ✔ Available in Ebony and Maple finishes
- ✔ Ultrasonic cool mist diffuser technology
- ✔ Suitable for fragrance oils and aroma liquids
- ✔ Timer settings with ambient LED lighting
- ✔ Quiet operation for indoor environments
ONA Gel 20kg Fresh Linen UK | Professional Odour Neutralising Gel
£110.00 incl. Vat
The ONA Gel 20kg Fresh Linen is a professional-grade odour neutralising gel designed for large grow rooms, hydroponic systems, drying rooms, commercial environments, and industrial odour control applications. Using powerful odour-neutralising technology rather than simply masking smells, this large-capacity ONA Gel bucket provides long-lasting odour management with a fresh clean linen fragrance.
- ✔ Large 20kg commercial-size ONA Gel bucket
- ✔ Fresh Linen fragrance
- ✔ Neutralises odours instead of masking them
- ✔ Ideal for grow rooms, drying rooms & hydroponics
- ✔ Long-lasting continuous odour control
ONA Gel 20kg Lemongrass UK | Professional Odour Neutralising Gel
£110.00 incl. Vat
The ONA Gel 20kg Lemongrass is a professional-grade odour neutralising gel designed for large grow rooms, hydroponic systems, drying rooms, commercial environments, and industrial odour control applications. Featuring a fresh citrus lemongrass fragrance, this powerful odour control gel neutralises smells at the molecular level instead of simply masking them, providing long-lasting continuous odour management for demanding indoor environments.
- ✔ Large 20kg commercial-size ONA Gel bucket
- ✔ Fresh Lemongrass fragrance
- ✔ Neutralises odours instead of masking them
- ✔ Ideal for grow rooms, drying rooms & hydroponics
- ✔ Long-lasting continuous odour control
OCD DEO-MAX Gel 4L UK | Professional Odour Neutralising Gel
£45.00 incl. Vat
The OCD DEO-MAX Gel 4L is a professional odour neutralising gel designed to eliminate strong unwanted smells in grow rooms, hydroponic systems, drying rooms, ducting, smoking areas, and indoor environments. Available in Bubble Gum, Fresh Linen, Lemon, Orange, and Original fragrances, the advanced DEO-MAX formula chemically breaks down odour molecules instead of simply masking them with fragrance.
- ✔ Large 4L professional odour neutralising gel
- ✔ Available in Bubble Gum, Fresh Linen, Lemon, Orange & Original
- ✔ Neutralises odours instead of masking them
- ✔ Ideal for grow rooms, hydroponics & drying rooms
- ✔ Long-lasting passive odour control
OCD DEO-MAX Cube 130g UK | Professional Odour Neutralising Cube
£10.00 incl. Vat
The OCD DEO-MAX Cube 130g is a powerful odour neutralising cube designed to eliminate strong unwanted smells in grow rooms, hydroponic systems, cars, wardrobes, ducting, offices, and indoor environments. Available in Bubble Gum, Fresh Linen, Lemon, Orange, and Original fragrances, the DEO-MAX Cube uses advanced odour elimination technology to chemically break down airborne odour molecules instead of simply masking them.
- ✔ Professional DEO-MAX odour elimination formula
- ✔ Available in 5 fragrance options
- ✔ 130g long-lasting odour control cube
- ✔ Ideal for grow rooms, ducting & hydroponics
- ✔ No power or installation required
OCD DEO-MAX 1L UK | Professional Odour Neutralising Liquid
£16.99 incl. Vat
The OCD DEO-MAX 1L is a professional odour neutralising liquid designed to eliminate strong unwanted smells in grow rooms, hydroponic systems, drying rooms, ducting, smoking areas, and indoor environments. Available in Bubble Gum, Fresh Linen, Lemon, Orange, and Original fragrances, the DEO-MAX formula chemically breaks down odour molecules instead of simply masking them.
- ✔ Professional 1L DEO-MAX odour control liquid
- ✔ Available in Bubble Gum, Fresh Linen, Lemon, Orange & Original
- ✔ Neutralises odours instead of masking them
- ✔ Ideal for grow rooms, hydroponics & ducting
- ✔ Suitable for atomisers and misting systems
-50%
ONA Breeze Fan UK | Automatic ONA Gel Odour Control Fan System
Original price was: £65.00.£32.50Current price is: £32.50. incl. Vat
The ONA Breeze Fan is a compact automatic odour control fan designed to work with ONA Gel buckets for enhanced odour neutralisation in grow rooms, grow tents, hydroponic systems, drying rooms, and indoor environments. By increasing airflow across ONA Gel, the Breeze Fan helps distribute odour-neutralising particles more effectively throughout the room for faster and more efficient smell control.
- ✔ Designed for use with ONA Gel buckets
- ✔ Improves odour neutralisation performance
- ✔ Compact low-energy fan system
- ✔ Ideal for grow rooms, drying rooms & hydroponics
- ✔ Quiet continuous operation
What Is Odour Control in Indoor Growing?
Odour control refers to the process of removing or neutralising smells produced by plants in indoor grow spaces. As plants grow, they release aromatic compounds into the air, which can quickly build up in enclosed environments.
Effective odour control ensures that these smells are either removed or neutralised before air leaves the grow space, helping maintain a clean and discreet environment.
Why Odour Control Is Important
Managing odours is an essential part of indoor growing, particularly during later stages of plant development.
- Prevents strong smells from escaping your grow space
- Maintains a clean and comfortable indoor environment
- Helps keep your setup discreet
- Improves overall air quality
Without proper odour control, smells can spread quickly throughout your home or surrounding areas.
Types of Odour Control Products
There are several methods used to control odours in indoor growing setups:
- Carbon filters – the most effective solution, removing odours from extracted air
- Odour neutralisers (gels, sprays and blocks) – mask or neutralise smells in the surrounding area
- Ozone generators – break down odour molecules through oxidation
- Air purifiers – improve air quality and reduce airborne particles
Each solution plays a different role, with carbon filters forming the core of most ventilation systems.
How Carbon Filters Control Odours
Carbon filters are widely regarded as the most effective method for odour control in indoor growing. They work by pulling air through activated carbon, which traps and absorbs odour molecules before the air is released.
When combined with an extractor fan, this process ensures that all air leaving the grow space is filtered and odour-free.
Odour Control and Ventilation Systems
Odour control works as part of a complete ventilation setup. For best results, combine odour control products with:
- Extractor fans to remove air
- Carbon filters to scrub odours
- Ducting and accessories to direct airflow
- Air circulation fans to maintain movement inside the space
This combination ensures that air is properly filtered before it leaves your grow space.
Maintaining Effective Odour Control
To keep odour control systems working effectively, it is important to maintain your setup:
- Replace carbon filters regularly (typically every 12–18 months)
- Ensure your ventilation system is properly sealed
- Match your fan and filter airflow correctly
- Monitor humidity, as high moisture can reduce filter efficiency
Proper setup and maintenance ensure consistent performance and long-term effectiveness.
Helpful Guides for Odour Control
If you want to learn more about managing smells in your grow space, explore our guides:
These guides will help you build an effective and discreet indoor growing setup.
Shop Odour Control Products in the UK
At Acorn Horticulture, we stock a wide range of odour control products for indoor growers across the UK. From carbon filters to odour neutralisers and air treatment solutions, our range is designed to keep your grow space clean and under control.
Browse our full selection above to find the right odour control solution for your setup.
FAQs
What is the best way to control grow room smell?
Carbon filters are the most effective method, as they remove odours from the air before it leaves the grow space.
Do odour neutralisers work?
Odour neutralisers can help reduce smells, but they are most effective when used alongside proper ventilation and filtration.
Do grow tents stop smells?
Grow tents help contain smells, but a carbon filter and ventilation system are needed to fully remove them.
How often should I replace a carbon filter?
Most carbon filters should be replaced every 12–18 months depending on usage and conditions.
