[ISTA] Aquarium Aluminum CO2 Cylinder (Face Up OR Face Side), 1L / 2L / 3L

European and USA safety regulations approved, the highest standard of quality.

Feature

• Ensure sufficient CO2 supply for photosynthesis.
• TUV safety regulation approved to promise the safest and reliable CO2 storage and supply.
• All seamless aluminum alloy compressed gas cylinder.
• With a special coating to limit damage from scratch.
• Works great in a water plant tank or with a calcium reactor.
• Can be refilled and reused.
• W21.8 thread

Facing

Check if your regulator is recommended for Face Up or Face Side. A "face up" cylinder has the valve pointing vertically upwards, while a "face side" cylinder has the valve on the side. There is no difference in how the CO2 is injected or used; it's simply a design choice for convenience and compatibility with certain regulators. 

Caution

• To achieve the best result, conjunction with ISTA bubble counter, check valve, and ceramic diffuser is recommended.
• Avoid direct sunlight and storage temperature above 50℃