Banish grow room odours once and for all

For many growers, the main advantage of indoor cultivation is the discretion that this method of plant cultivation offers. However, a grow room or grow tent can easily give itself away through compromising odours that may be bothersome or attract unwanted attention from the surroundings. In the following article, we will focus on methods that will help you effectively neutralise odour from a grow room or grow box.

Odour filters with activated carbon

Carbon filters that absorb odours are now part of the basic equipment of every grow room or grow tent. They work on a simple principle, where air from the extract fan passes through a cylinder filled with activated carbon, which captures the particles causing the odour.

• Appropriate size: For a carbon filter to work properly, its size and capacity must match the output of the extract fan. For example, for the PRIMA KLIMA extract fan with an output of 400 m3/h, a PRIMA KLIMA odour filter with a capacity of 480 m3/h is suitable. The maximum permitted airflow should always be higher than the fan output so that clogging of the ventilation system does not occur as the filter wears.
• Installation: Most growers connect the odour filter before the extract fan so that all air from the growing space comes into contact with the activated carbon. Air without odour then exits the ventilation duct outside the grow box or grow room. If the layout of your growing space does not allow this setup, you can also connect the filter at the end of the ventilation system in the direction of airflow. However, this method may not be as effective due to possible leaks in the ducting or tent. When installing an odour filter, you will need cable ties and ventilation ducting to connect the individual components.
• Regular maintenance and replacement: Activated carbon filters are extremely effective, but they do not last forever. Roughly every 6-10 months or every three growing cycles, replace the worn odour filter with a new one. You can extend the service life of the carbon filter by cleaning or replacing the white protective fabric after each cycle, as it traps dust and solid particles.

Do you not want to worry about assembling a ventilation system for your grow box? We have prepared ventilation kits for you, which include an extract fan with a custom odour filter and all the accessories needed for installation.

Gels and sprays for odour neutralisation

Chemical products for odour neutralisation contain aromatic substances that release an intense fragrance while also absorbing other odours. Thanks to their easy handling, the main advantage of odour absorbers is their universal application. Another benefit is their immediate effect, which you will appreciate, for example, during harvest.

• Use: To avoid affecting the terpene profile of the plants, we recommend placing chemical odour absorbers outside the growing area.
• Installation in ventilation ducting: For maximum effect, we recommend connecting a duct connector with space for placing an odour neutraliser in gel or a similar form into the ventilation system.
• Automatic dispensers: We recommend placing the ONA Block Dispenser and other automatic dispensers near the entrance doors to the grow room or room with the grow box.

Further tips for odour control

In addition to using carbon filters and chemical odour neutralisers, you can take several simple measures that will further reduce unwanted odours in your grow room or grow box.

• Adequate ventilation: Make sure that your growing space is sufficiently ventilated. It is important not only to have a sufficiently powerful extract fan, but also access to fresh air.
• Seal all gaps: Leaks in the grow box or in the ventilation ducting are a common cause of unwanted odour. It is important that as much air as possible passes through the extract fan with the carbon filter.
• Air ionisers: High-performance air ionisers are suitable for large growing rooms for medicinal plants. These are generators of negative ions that absorb odours and remove dust particles from the air.

Would you like to learn more about indoor growing and the most modern gardening techniques? You can find all this and much more on our Higarden blog!