ISTA CO2 Twin Gauge Controller

Take precise control of your planted aquarium's CO2 supply with the ISTA CO2 Twin Gauge Controller. Featuring dual gauges that simultaneously display cylinder pressure and working output pressure, this regulator gives you the clarity and confidence to dial in the perfect CO2 flow for explosive plant growth.

Whether you're running a lush Dutch aquascape or a nature-style planted tank, the twin gauge design eliminates guesswork — you'll always know exactly how much CO2 remains in your cylinder and what pressure is being delivered to your diffuser.

Key Features

• Dual gauges: cylinder pressure + output working pressure displayed simultaneously
• Precise flow rate adjustment via needle valve
• Compatible with standard CO2 cylinders
• Built-in safety valve to prevent over-pressurization
• Durable brass construction for long-lasting reliability
• Easy to read, clearly marked gauge faces

Specifications

• Inlet pressure: up to 3000 PSI
• Output pressure: 0–45 PSI adjustable
• Compatible with: standard CGA320 CO2 cylinders