Pro Leaf CO2 Regulator


Sale price£82.99

The Easiest and Most Effective Way of Adding Extra CO2 Into your Grow Room

The Pro Leaf CO2 Regulator fits onto a CO2 gas cylinder, utilising a solenoid valve to distribute the gas as required. It is initiated and doses according to the user's preference as set on the Pro-Leaf CO2 Controller. The Pro-Leaf CO2 Regulator ensures that perfect levels of CO2 are maintained in the grow area at all times, stimulating your plants to grow faster and larger than ever before!

How the Pro-Leaf CO2 Regulator Works

CO2 is a naturally occurring gas that plays an essential role in the process of photosynthesis. Typically, the atmosphere around us has CO2 present in concentrations of around 360 parts per million (ppm). Plants can use up this ambient level of CO2 within an hour, and when levels drop below 200ppm, growth will quickly start to stall. This issue can be addressed by equipping your grow room with an adequate extraction system; however, plants can use more CO2 than is generally present in the atmosphere. When used correctly, supplementary CO2 has numerous benefits, it makes plants more tolerant to higher temperatures, triggers amplified growth rates, leading to improved harvests, in terms of quality and quantity. Optimal levels of CO2 are between 1000ppm and 1200ppm; levels higher than this can be detrimental, while levels above 2000ppm actually become toxic to your plants. At 4000ppm to 5000ppm levels become toxic to humans!

The Pro-Leaf CO2 Regulator administers optimal CO2 levels when used with the Pro-Leaf Controller. The Pro-leaf CO2 Regulator fits onto a charged CO2 gas cylinder, with the CO2 releasing when the solenoid valve opens. The valve on the Pro-Leaf CO2 Regulator stays open until the CO2 level hits the predetermined CO2 limit or time limit before shutting off to avoid toxic CO2 levels in your growing area.

For more information on CO2, read this article on the One Stop Grow Shop Blog.


  • Compatible with Pro-Leaf CO2 Controllers
  • Produces precise doses of CO2 with a fixed flow rate of 15 litres per minute
  • Incredibly reliable, easy to use and install
  • Connects to a CO2 bottled gas cylinder (sold separately)
  • Comes with a 1 year manufactures warranty

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