Ventilation & Environment
Everything that controls the air in a grow tent or room: extractor fans, carbon filters and ducting for extraction, circulation fans, controllers and hygrometers, heaters, humidifiers and dehumidifiers, CO2 equipment, reflective sheeting and hanging gear.
In StockGroWarm
£44.96
In StockiBebot
AirComfort Temp & Humidity Sensor
£26.96
In StockGarden HighPro
£8.96
In StockGorilla
£35.96
In StockGreens Horticulture
£2.48
In StockGreens Horticulture
£11.66
In StockPro-Leaf
£357.26
In StockGreens Horticulture
£4.50
In StockETI
£4.46
In StockGlobal Air Supplies
£179.96
In StockGlobal Air Supplies
£341.96
In StockGreens Horticulture
£5.36
In StockCAN
£175.46
In StockRhino
£12.56
In StockRhino
RVK 200L / Rhino Pro / Combi Ducting
£296.96
In StockRhino
RVK 100A / Rhino Hobby / Acoustic Ducting
£134.96
In StockRhino
RVK 100A / Rhino Pro / Combi Ducting
£134.96
In StockRhino
RVK 200A / Rhino Hobby / Combi Ducting
£188.96
In StockRhino
RVK 250L / Rhino Pro / Combi Ducting
£314.96
In StockRhino
RVK 250A / Rhino Pro / Acoustic Ducting
£304.79
In StockRhino
RVK 150L / Rhino Pro / Acoustic Ducting
£252.50
In StockRhino
RVK 315A / Rhino Pro / Combi Ducting
£395.96
In StockRhino
RVK 250L / Rhino Hobby / Acoustic Ducting
£282.53
In StockRhino
RVK 125A / Rhino Pro / Acoustic Ducting
£166.03
About Ventilation & Environment
Four jobs
Extraction pulls warm, damp air out through a carbon filter and brings fresh air in; it is the backbone of the room and is sized to the tent volume. Circulation fans keep the air moving across the canopy so no pocket goes stale and stems grow strong. Control means a fan speed controller or a climate controller holding the temperature and humidity you set, with a hygrometer to check it. Climate equipment covers the rest: heaters for winter, humidifiers for propagation, dehumidifiers for flowering, CO2 for sealed rooms.
Where to start
A fan and filter kit sized to your tent is the first purchase; add a clip or floor fan; then a controller once you know how the room behaves. The Fan & Filter Kits section pairs everything for you, and the shop will size a room over the phone.
Growers' Guides
- Grow Tent Ventilation: Passive Intake or an Intake Fan?Grow tent ventilation explained: passive vents or an intake fan, negative pressure, bug screens, shutters, ducting and how to run two fans together.
- Grow Tent Humidity: How to Lower or Raise ItGrow tent humidity targets for each stage, why it climbs at lights-off, how to lower or raise it, and when you need a humidifier or a dehumidifier.
- Hydroponics and Growing Terms Explained: A Growers' GlossaryHydroponics and growing terms explained in plain English, from EC, pH and PPFD to VPD, NFT and run-to-waste, with links to our full guides.
- VPD Chart: What Vapour Pressure Deficit Means for Your PlantsVPD explained in plain terms, with a chart by temperature and humidity, the ranges to aim for at each stage, and how to measure and control it.
- How to Size an Extraction Fan and Carbon Filter for a Grow TentWork out the inline fan and carbon filter your grow tent needs: tent volume, air changes a minute, the filter allowance, and a table by tent size.
- The Importance of Airflow, Temperature & Humidity in a Grow RoomCreating the perfect environment inside your grow room isn’t just a matter of comfort for your plants - it’s the foundation of healthy growth, efficient…