Carbon Filters for Grow Rooms offer the ultimate defence against odours, airborne impurities, and poor airflow—keeping your indoor garden fresh, discreet, and healthy. Crafted with premium activated carbon, these filters remove smells, dust, and VOCs before air exits your space, ensuring clean grow-room ventilation.
Odour Control: Deep-cleansing activated carbon neutralises even the strongest smells.
Cleaner Air, Healthier Grows: Blocks dust, spores, and contaminants so your plants thrive.
Seamless System Integration: Designed to pair effortlessly with inline fans and ducting for full airflow control.
Built to Last: Dense carbon beds for extended use and reliable performance.
Maximise your ventilation system—pair your carbon filter with an inline fan and ducting. Need longer carbon filter life? Add a pre-filter from our air purifiers collection.
Filter Size
Airflow Rating (m³/h)
Ideal Tent Size
100 mm (4″)
150–200
Up to 60 × 60 cm
125 mm (5″)
200–300
80 cm × 80 cm – 100 × 100 cm
150 mm (6″)
400–600
120 × 120 cm – 150 × 150 cm
200 mm (8″)
800–1000+
Large tents & grow rooms
Inline vs Standard Carbon Filters
Standard can-style filters are industry staples—loaded with deep carbon beds to maximise odour removal and lifespan. They’re best used as the core of your grow-room ventilation system.
Inline carbon filters, however, are slim and compact—perfect for tight spaces or when you need to optimise vertical room as you don't need to have them insde the room at all. They’re lighter and easier to install, making them ideal as secondary filters or in ceiling-restricted setups.
Airflow: Push or Pull?
Best practice: position your carbon filter before (on the intake side of) your inline fan. This means air is drawn through the filter first, protecting your fan and maintaining better efficiency. You want to pull the hot humid air out ensure you're running it the right way.
Carbon Filter FAQs
How long do carbon filters last? Typically 12–18 months depending on environment and usage. Replace when odours return or airflow drops significantly.
How to size the right filter? Match the filter’s diameter and airflow rating to your inline fan specs. Use the table above as a quick reference.
Do carbon filters remove all smells? Yes—when your system is correctly configured and maintained. Most odours are neutralised by the carbon bed before exiting the filter.
When to replace your filter? If odours start leaking or airflow is noticeably weaker (even with clean pre-filters), it’s time for a replacement.
Why Shop With Us?
At The Hydro Bros, we stock trusted carbon filters used by growers globally. Combined with our 4.8 ★ Trustpilot score, discreet shipping, and expert support, you can shop confidently every time. Browse below and level up your grow-room ventilation today!
