10 Best Co2 Generator For Greenhouse of 2025

Main Highlights

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  Accelerated Plant Growth & Higher Yields: Consistent CO supply helps plants photosynthesize more efficiently, leading to faster growth, quicker fruit ripening, and bigger, healthier harvests.
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  Effortless & Maintenance-Free: No tanks, regulators, or electricity required. Just hang the bag in your grow space and enjoy natural CO enrichment for weeks.
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  Safe for Plants & People: Releases CO steadily and safely, creating the ideal growing environment for indoor grow rooms and greenhouses without risk.
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  Compact Yet Powerful: Effective for areas up to 2m² (for size M), making it the perfect solution for hobby growers, small tents, or compact greenhouses. Its a budget-friendly alternative to expensive CO systems.
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  Satisfaction Guaranteed: We stand behind the effectiveness of every CO2BAG. If youre not fully satisfied with the results, well make it right grow with confidence.

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  PASSIVE CO2 PRODUCTION - The Original ExHale CO2 Bag will provide a 4x4 foot or 128 cubic foot space with CO2 for up to 9 months, of which 6 months are peak production. This product is ideal for smaller grow rooms and grow tents that are looking to produce more CO2 and catalyze plant and vegetative growth.
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  EXPERIENCE A LARGER YIELD - Grow rooms, when used in companionship with the Original ExHale CO2 bag, can experience anywhere from 20% - 30% more growth. Requires no heat, electricity or complicated gear. Curated for indoor growers, hobby gardeners and greenhouse enthusiasts.
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  MAINTENANCE FREE - Place the ExHale bag slightly above the height of the plants in your grow space. CO2, being heavier than O2, will precipitate downward towards your plants. ExHale Original CO2 is a revolution in indoor CO2 production systems. Maintenance Free! Just CO2! Proudly made in the USA. Use it as a natural alternative to electric CO2 generators and equipment.
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  PERFECT FOR MOST PLANTS - ExHale can be used for both vegetative plant growth as well as for fruit and flower production. Put the ExHale CO2 Bag in your grow tent, and let it do its thing. Works best with controlled airflow and ventilation; optimal results in sealed or semi-sealed environments. A must-have for serious growers.
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  EASY-TO-FOLLOW DIRECTIONS - Remove hanger from bag. Fold the top of the bag over and re-attach the separation seam hanger by placing it above the filter patch. The Exhale bag can now be placed in your garden. Avoid compressing or folding the bag when hanging.

Main Highlights

• 
  Accelerated Plant Growth & Higher Yields: Consistent CO supply helps plants photosynthesize more efficiently, leading to faster growth, quicker fruit ripening, and bigger, healthier harvests.
• 
  Effortless & Maintenance-Free: No tanks, regulators, or electricity required. Just hang the bag in your grow space and enjoy natural CO enrichment for weeks.
• 
  Safe for Plants & People: Releases CO steadily and safely, creating the ideal growing environment for indoor grow rooms and greenhouses without risk.
• 
  Compact Yet Powerful: Effective for areas up to 3m² (for size XL), making it the perfect solution for hobby growers, small tents, or compact greenhouses. Its a budget-friendly alternative to expensive CO systems.
• 
  Satisfaction Guaranteed: We stand behind the effectiveness of every CO2BAG. If youre not fully satisfied with the results, well make it right grow with confidence.

Main Highlights

• 
  Accelerated Plant Growth & Higher Yields: Consistent CO supply helps plants photosynthesize more efficiently, leading to faster growth, quicker fruit ripening, and bigger, healthier harvests.
• 
  Effortless & Maintenance-Free: No tanks, regulators, or electricity required. Just hang the bag in your grow space and enjoy natural CO enrichment for weeks.
• 
  Safe for Plants & People: Releases CO steadily and safely, creating the ideal growing environment for indoor grow rooms and greenhouses without risk.
• 
  Compact Yet Powerful: Effective for areas up to 3m² (for size XL), making it the perfect solution for hobby growers, small tents, or compact greenhouses. Its a budget-friendly alternative to expensive CO systems.
• 
  Satisfaction Guaranteed: We stand behind the effectiveness of every CO2BAG. If youre not fully satisfied with the results, well make it right grow with confidence.

Main Highlights

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  CO2bag is very small and easily affordable bag producing carbon dioxide for your plants.
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  Increases the growth rate of your plants, accelerates the ripening of the fruit
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  CO2bag is safe to use, easy to setup without any maintenance required.
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  100% satisfaction quarantee of all our products!
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  Recommended room size for one CO2BAG M is up to 22 ft2
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  We are happy to answer your questions. Support: support@co2add.com
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  CO2 is heavier than air, so you must put the bag HIGHER than plants.

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  The GREEN PAD CO2 generators has made adding Carbon Dioxide to indoor gardens easier than ever
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  THE GREEN PAD may be one of the most inexpensive and innovative ways to get the good gas to your plants. THE GREEN PAD's were designed to produce enough CO to be of significant benefit to the indoor home garden without the up front expense of equipment, but with similar results.
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  The Green Pad is the real deal. Digital meters show high levels of CO FOR ALL YOUR CURRENT TANK CUSTOMERS THAT USE TANKS. Do not get in a situation where you run out of CO. THE GREEN PAD is your backup for growers using CO tanks that run empty. Keep an extra pack on hand for emergencies or when you cannot get a tank refill.
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  Without expirations issues, THE GREEN PAD's are ready when your garden needs them. EASY TO USE: To raise your PPM's follow the directions and hang 1-2 GREEN PADS above your canopy per every 200-400 cubic feet of garden space. Activated by humidity (35%) and /or by lightly misting with water or, adding a moist sponge to a folded GREEN PAD.
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  Adding more of THE GREEN PADS will increase your PPM's in your specific area

Main Highlights

Main Highlights

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  Our product is made from all natural, 100% organic ingredients which when activated create a blast of Co2 that can reach 1200 ppm in a 12 x 12 x 12 area
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  Our yucca extract is cold-pressed for maximum biological activity
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  As a wetting agent, yucca extract can be added to almost any liquid fertilizer mix, as part of an overall fertilization program
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  item package weight: 1.2 pounds

Main Highlights

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  Durable Material: Long-lasting durable brass components will function for many years without rusting
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  Specifications: 1.58" high pressure gauge: 0-4000 PSI; Flowmeter: 0-15 SCFH; Inlet connection: cga-320
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  Application: Perfect for enhancing the amount of available carbon dioxide and accelerating plant growth rates and yields by up to 40% in indoor hydroponics, grow rooms, grow tents and warm houses
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  Components: A precision regulator, flow gauge, and industrial solenoid valve, 5 meters free plastic dispensing tubing and USA standard 3-prong plug (hose tail to suit 4.2 mm hose diameter)
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  Multiple Options: This CO2 regulator will allow you to maintain ideal CO2 levels for optimal growth

Main Highlights

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  A gas release system designed to help create the ideal grow environment by regulating CO2 output.
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  Carbon dioxide meter with pressure gauge accurately measures gas flow and remaining CO2 tank levels.
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  Forged with heavy-duty brass and a solenoid valve pipe to ensure proper flow and no gas leakage.
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  Secures installs on many tanks and hose tubing to fit as a CO2 generator for grow tent applications.
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  Brass Construction | Pressure Gauge: 0-4000 PSI | Inlet: CGA-320 | Flow Meter: 0.5-15 SCF/hour