Garden King Hanging CO2 Bag - Passive Carbon Dioxide Generator for Grow Rooms

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The Garden King Hanging CO2 Bag is a simple passive carbon dioxide generator designed to supplement CO2 around plants in indoor grow rooms and other suitable controlled growing environments, without gas cylinders, regulators, controllers or electrical equipment.

Plants use carbon dioxide during photosynthesis, combining CO2 with light and water to produce the energy required for growth. In an enclosed growing environment with strong lighting and actively growing plants, available CO2 can become depleted if air exchange is limited.

The Garden King Hanging CO2 Bag offers a straightforward way to provide an additional source of carbon dioxide. Once activated, the bag generates CO2 passively and is suspended above the plant canopy, allowing the released carbon dioxide to move down through the growing area.

No electricity or bottled gas is required. Garden King's instructions recommend introducing the bag approximately 2-3 weeks after seeding and using it in temperatures above approximately 18°C.

Why use a Garden King Hanging CO2 Bag?

  • Passive CO2 generation - produces carbon dioxide without bottled gas or powered dosing equipment.
  • Designed for indoor growing - a straightforward option for suitable enclosed growing environments.
  • Supports photosynthesis - carbon dioxide is one of the essential inputs plants use during photosynthesis.
  • No electricity required - completely passive operation.
  • No regulator required - avoids the regulator, solenoid and pipework associated with compressed CO2 systems.
  • Simple hanging design - suspended above the plant canopy where released CO2 can move through the growing area.
  • Easy activation - create the required openings and hang the bag in position.
  • Compact and convenient - requires very little growing-room floor space.
  • Useful for smaller setups - an accessible alternative where a full controlled CO2 injection system is unnecessary.

How does a hanging CO2 bag work?

The contents of the Garden King bag naturally generate carbon dioxide after the bag has been activated. The CO2 is gradually released through openings at the top of the bag into the surrounding grow-room air.

Because carbon dioxide is denser than normal air, the bag is designed to be suspended above the crop rather than placed on the floor. Normal air movement within the growing environment then helps distribute the released CO2 around the plant canopy.

This is a passive system rather than a precision CO2 controller. The bag continuously generates CO2 under suitable conditions rather than maintaining a user-selected parts-per-million concentration.

How to use the Garden King Hanging CO2 Bag

Garden King's recommended method is straightforward:

  • Introduce the CO2 bag approximately 2-3 weeks after seeding.
  • Create six holes at the top of the bag to allow the generated CO2 to escape.
  • Hang the bag securely above the plants.
  • For larger growing spaces, bags can be positioned above aisles or appropriate areas above the crop.
  • Maintain suitable growing temperatures, as the product is designed to generate CO2 at temperatures above approximately 18°C.

Always follow the instructions supplied with the product when activating and positioning the bag.

Where should a CO2 bag be positioned?

Position the Garden King CO2 Bag above the plant canopy. This takes advantage of the fact that carbon dioxide is denser than the surrounding air and allows it to move down through the crop.

Air circulation is also important. Gentle movement from circulation fans can help mix the released CO2 throughout the growing area rather than allowing it to remain concentrated immediately around the bag.

Avoid positioning the bag where an extraction system will immediately pull the released CO2 directly out of the growing environment. In highly ventilated rooms, the effectiveness of passive CO2 supplementation can be reduced because additional CO2 may be removed before plants have an opportunity to use it.

Temperature & grow-room environment

The Garden King Hanging CO2 Bag is designed to generate carbon dioxide at temperatures above approximately 18°C (64°F). This makes normal actively lit indoor growing temperatures suitable for operation.

CO2 supplementation should be considered part of the overall growing environment rather than a substitute for good environmental management. Light intensity, temperature, humidity, nutrition, irrigation and air movement all influence plant performance.

Plants use CO2 for photosynthesis when suitable light is available. For that reason, carbon dioxide supplementation is primarily relevant during the illuminated part of the growing cycle.

How long does the Garden King CO2 Bag last?

Current product guidance gives the Garden King Hanging CO2 Bag an approximate 3-4 week active lifespan once opened.

Before activation, keep the sealed bag in a cool, dry location until it is required. Do not create the activation holes until you are ready to put the bag into use.

Passive CO2 bag vs controlled CO2 injection

A passive CO2 bag and a bottled CO2 system serve different types of grow room. The Garden King bag is designed to provide a simple supplementary source of carbon dioxide without specialist equipment.

Garden King CO2 Bag Passive generation, simple installation, no electricity, gas cylinder, regulator or controller required.
Controlled CO2 System Uses dedicated equipment to measure and regulate CO2 concentration, making precise environmental control possible.

Growers requiring a specific CO2 concentration should use appropriate monitoring and controlled dosing equipment. A passive bag should not be expected to maintain an exact ppm target.

Garden King Hanging CO2 Bag product details

Brand Garden King
Product Hanging CO2 Bag
Product type Passive carbon dioxide generator
Primary application Supplementary CO2 for indoor growing environments
Position Hang above the plant canopy
Activation Create six holes at the top of the bag
Recommended introduction Approximately 2-3 weeks after seeding
Operating temperature Designed to generate CO2 above approximately 18°C (64°F)
Approximate active lifespan 3-4 weeks once opened
Electricity required No
Gas cylinder required No
Storage before use Keep sealed in a cool, dry location

Garden King Hanging CO2 Bag FAQs

What is the Garden King Hanging CO2 Bag?

It is a passive carbon dioxide generator designed to provide supplementary CO2 in suitable indoor growing environments without requiring bottled gas or electrical equipment.

Why do plants need carbon dioxide?

Carbon dioxide is an essential part of photosynthesis. Plants use CO2 together with light and water as part of the process that supports growth.

When should I start using the Garden King CO2 Bag?

Garden King recommends introducing the bag approximately 2-3 weeks after seeding.

How do I activate the Garden King Hanging CO2 Bag?

Create six holes at the top of the bag as directed and then suspend it securely above the plants.

Where should I hang a CO2 bag?

Hang it above the plant canopy so the released carbon dioxide can move down through the growing area. In larger spaces, bags can be positioned above appropriate crop areas or aisles.

What temperature does the Garden King CO2 Bag need?

The bag is designed to generate carbon dioxide at temperatures above approximately 18°C (64°F).

How long does the Garden King Hanging CO2 Bag last?

Current product guidance gives an approximate active lifespan of 3-4 weeks once the bag has been opened and activated.

Does the CO2 bag need electricity?

No. Carbon dioxide is generated passively, so the bag requires no electrical connection.

Do I need a CO2 regulator or controller?

No regulator or controller is required to operate the bag. However, a CO2 monitor is required if you want to know the actual carbon dioxide concentration within the growing environment.

Can a hanging CO2 bag maintain an exact CO2 ppm?

No. It is a passive supplementary CO2 source rather than a precision dosing system. Growers who need to maintain a specific ppm should use appropriate monitoring and controlled CO2 equipment.

Will extraction fans remove the additional CO2?

Strong air extraction can remove supplementary carbon dioxide from the grow room. Positioning and overall ventilation strategy therefore affect how useful passive CO2 supplementation will be.

Should I use circulation fans with a CO2 bag?

Normal gentle air circulation can help distribute carbon dioxide through the plant canopy rather than allowing it to remain concentrated around one area.

How should an unused Garden King CO2 Bag be stored?

Keep the bag sealed in a cool, dry location until you are ready to activate and use it.

Is a passive CO2 bag the same as bottled CO2 injection?

No. A passive bag provides supplementary CO2 without precision control, while a properly controlled bottled CO2 system can regulate carbon dioxide concentration to a defined target.

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£2.00