The Importance Of CO2 In Your Hydroponic Grow Room

CO₂ Enrichment in Hydroponics – Boost Growth & Yields Naturally

Plants need carbon dioxide (CO₂) to survive and thrive. It’s a key element in the photosynthesis process, where plants convert light, water, and CO₂ into sugars that fuel growth. In fact, most of the carbon in a plant’s tissue originates from the air around it.

In standard indoor conditions, ambient air contains roughly 330–450ppm of CO₂, which is enough for survival—but it’s far from optimal for maximum plant performance.

Can Increasing CO₂ Boost Plant Growth?

Absolutely! While 200ppm is the minimum CO₂ level needed for photosynthesis, research and grower experience show that levels of 1000–1200ppm can:

• Increase plant growth rates

• Improve nutrient uptake

• Boost yields by 30–50% under optimal conditions

But beware: too much CO₂ can reduce transpiration, limiting nutrient access and affecting plant health. This is why accurate CO₂ monitoring and control are essential.

Use a digital CO₂ controller to measure and maintain precise levels in your grow room.

What Are the Optimal Grow Room Conditions for CO₂?

To get the most from CO₂ enrichment, you must balance other key environmental factors:

Avoid using CO₂ with outside air extraction running, as it will vent your enrichment before the plants can use it.

 How to Tell if CO₂ Is Working

Your plants will begin to:

• Grow greener, thicker foliage (more chlorophyll)

• Develop stronger stems and branches

• Build a more robust root system

• Improve water efficiency and nutrient uptake

These are all signs that your photosynthesis rates are climbing, driven by CO₂.

Ways to Add CO₂ to Your Grow Room

You can introduce extra CO₂ in several easy ways:

Shop Popular CO₂ Enrichment Products:

• CO₂ Gemini Bag

• CO₂ Generator

• Exhale CO₂ Bag

• CO₂ Propagation Bag – Twin Pack

Browse the full CO₂ enrichment range on our website, or visit one of our stores in Manchester or Huddersfield for expert advice and product support.