After consulting with a handful of growers, vertical farmers, and cultivators, we chose the top 5 grow controllers that are most sought after in this industry.

What is a CO2 Grow Controller?

To grow plants or cannabis, professionally, you may require a fully automatic CO2 generator. You can optionally choose CO2 bags or buckets, but for mid-large grow rooms CO2 generators are really essential in extending your yield and with that comes the need for a means to control the CO2.

Because CO2 regulators just release the CO2 for your plants to grow, it's important to monitor levels over 1,500 ppm as this level starts to become toxic for your plants, thus, we need a controlled solution.

That solution is a CO2 grow controller.

What to look for in a High-Quality CO2 Grow Controller?

When choosing a CO2 grow controller for your indoor grow room, it’s important to focus on functionality, accuracy, and ease of integration with your overall grow system. Whether you're cultivating cannabis, leafy greens, or specialty crops, the right controller can significantly improve yields and efficiency by maintaining the perfect environment for plant growth.

Before purchasing a CO2 grow controller, consider the following key features:

• Integrated CO2 Monitoring – look for built-in (NDIR) sensors for accurate reading
• Configurable Settings– ensures the unit allows you to customize CO2 levels
• Built-In Solenoid Valve - provides automatic CO2 delivery control
• Temperature and Humidity Compatibility – look for this combo for stability 
• Large, Easy-to-Read Display – a clear interface will verify conditions
• Calibration Options – look for a controller with manual or automatic calibration

What are the best CO2 grow controllers?

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