ExHale CO2 bags are a popular, ready-to-use, continuous supply of CO2 for your grow room.
Indoor grow rooms can often lack crucial CO2 which can inhibit plant growth - these bags feature a special breathing patch for a steady and continuous CO2 output with no need to turn off or on - just move the hanging bracket up so it's above the breathable patch and leave in place until it's replace by date, for optimal growth.
100% recyclable, they're available in medium (suitable for an area around 1.2m x 1.2m or 4-6 plants) and XL (1.8m x 1.8m or 8-10 plants). replace every 3-6 months.