CO₂ Grow Room Calculator | Co₂ grow room calculator indoor Table of Contents Toggle CO₂ Grow Room CalculatorCO₂ Requirement: CO₂ Grow Room Calculator Calculate the optimal CO₂ level for your grow room based on room volume and desired CO₂ concentration. Room Volume (cubic feet): Desired CO₂ Concentration (ppm): Calculate CO₂ Requirement CO₂ Requirement: