2L CO2 Cylinder for Planted Aquariums – High-Strength Steel with G5/8 Valve Thread (Empty)

🔧 Key Features:

• ✅ CO2 Capacity: 2 Litre steel cylinder for pressurised CO2 systems

• ✅ Material: Durable, corrosion-resistant steel

• ✅ Thread Type: G5/8 standard fitting (check regulator compatibility before ordering)

• ✅ Safety Valve Included: For pressure control and safety

• ✅ Empty Cylinder: Supplied without CO2 gas (must be filled locally)

• ✅ Built to Last: Withstands high pressure; rust-free construction

• ✅ Ideal for Planted Tanks: Enhances aquatic plant growth, photosynthesis, and oxygen levels

⚠️ Important Notes:

• This is an empty cylinder – no CO2 gas is included.

• Ensure your local CO2 filling station supports G5/8 thread before purchasing.

• Not all regulators fit this thread; verify regulator compatibility.

• Keep upright and handle with care; use only with approved regulators and diffusers.

🌿 Why Use CO2 in Aquariums?

• Encourages faster and healthier plant growth

• Reduces algae growth by supporting plant competition

• Boosts oxygen levels during the light cycle

• Essential in medium to high light tanks; beneficial even in low light

📝 Product Description:

This 2-litre high-quality steel CO2 cylinder is designed specifically for aquarium use, particularly in planted tanks where CO2 supplementation is essential for plant growth. Built to last with corrosion-resistant materials and a secure safety valve, this pressurised cylinder ensures safe and stable CO2 storage. The G5/8 thread fits most standard regulators (check compatibility before purchase). Supplied empty—must be filled at your local CO2 filling station.

CO2 is crucial for healthy plant growth in aquariums. During photosynthesis, aquatic plants use CO2, water, and light to produce oxygen and sugars for growth. In a closed aquarium environment, CO2 is often limited, making external supplementation necessary for medium to high light setups. Using a reliable CO2 cylinder helps improve plant health, prevent algae, and create a thriving planted tank. 

Note : All regulators are not compatible with this cylinder thread G5/8