Single-use CO2 cylinder.

Main Features:
• Optimal nutrition for fast and slow-growing plants in small aquariums.
• Easy installation: Attach the pressure regulator valve to the inner rear coil on the outer coil of the storage cylinder. Display pressure on the pressure gauge.
• Single-use cylinder, pre-loaded with carbon dioxide. Non-refillable. Suitable for JBL ProFlora u201 fertilizer system.
• Maximum safety: Tested up to 275 bar.