The Pro-Leaf Controller makes it simple to maintain optimal CO2 levels in your grow room. Just plug it into a socket, connect your CO2 source (bottle or burner), and it’ll handle the rest—automatically adjusting CO2 output based on real-time data from its sensor.
Boosts Growth & Yields: Increases photosynthesis with CO2 levels between 400–2000ppm
Smart & Efficient: Built-in light sensor stops dosing during dark periods to avoid waste
Simple Setup: Plug-and-play operation with a clear display and easy controls
Accurate Monitoring: Real-time CO2 readings and dosing via external sensor (4.5m cord)
Flexible Control Modes: Works with bottles, regulators, gas-powered CO2 generators, or fans
Includes Everything: Controller, sensor, fixings, instruction manual, and 1-year warranty
Photosynthesis thrives with higher CO2—up to 3x atmospheric levels—helping plants grow faster and produce larger fruits. Unlike guesswork methods, Pro-Leaf doses with precision using real-time data.
Control Range: 400–2000ppm
Accuracy: ±100ppm
Max Load: 10A
Weight: 1kg
Power: UK 3-pin plug
Set your desired CO2 PPM and deadband (tolerance range).
Choose your control mode:
PPM Up for CO2 burners
Fuzzy Logic for CO2 bottles
PPM Down for fan-controlled reduction (optional)
Use the Max/Min function to track CO2 levels while away.
Note: Keep at least 2.5m from digital ballasts. Not compatible with sulfur vapourisers (remove sensor before use to protect warranty).
Mainland England & Wales
We ship parcels using DHL tracked Service. DHL will send you tracking information by email or text to inform you know when they will be delivering your parcel.
Small items are sent via a Royal Mail tracked service.
Our cut-off time for deliveries to leave us the same day is 3pm Monday to Friday.
In Stock: 1 - 2 Working Days
Out of Stock: 2 - 4 Working Days
Items Marked 'Out of Stock' on the website are not currently available from our supplier. Please call or email & we will update you when available.
If any item ordered is unavailable we will contact you by email or phone with expected delivery times. We only debit orders on dispatch so should you wish to cancel, we will do so.
Free Product Exchange:
We allow 30 days for a product exchange. On receipt of the original unused items we will return your exchange carriage free.
Terms and conditions apply.
Scottish Highlands / Northern Ireland
The cut off time for deliveries to leave us the same day is 3pm Monday to Friday.
We ship using DHL tracked service. DHL will send tracking information by email or text so you know when they will be delivering your parcel.
Small items are sent via a Royal Mail tracked service.
Free Collection:
Please arrange a collection time and date with our team if you wish to collect your order.
