Precision Control Fine trim valve for precise CO2 output adjustments. Hold a steady CO2 dose to avoid daily swings and keep plant growth consistent. Clear Dual Meter Monitoring Doublemeter display shows both the cylinder (internal) pressure and the output pressure at a glance. Monitor remaining gas and delivery pressure without guesswork. Durable Materials and Construction Built with 304 stainless steel and aluminum alloy for greater resistance and longer life than standard aluminum reducing valves. Suited to regular use in aquarium environments. Reliable Leak Prevention Professional sealing technology minimizes the risk of leaks, providing a safer, more dependable supply of CO2 to aquatic plants. Why this regulator matters Solves unstable dosing: the trim valve and output gauge let you dial in exact flow and keep it steady over time. Reduces maintenance and replacement: robust materials and improved sealing lower corrosion and leakrelated failures. Simplifies monitoring: dual meters remove uncertainty about how much gas remains and what pressure is being delivered. Function and compatibility Designed for aquarium CO2 systems and intended for use with CO2 cylinders in planted tanks. Provides precise control of delivered CO2 without complex setup. Compact, useradjustable control suitable for hobby and smaller professional aquarium setups. Practical use scenarios Home planted aquarium: maintain target CO2 levels for healthy stem plant growth and consistent water chemistry. Aquascaping displays or public tanks: deliver stable CO2 for long display periods with minimal intervention. Small commercial or multitank setups: monitor cylinder pressure and output for scheduled refills and consistent plant health. Simple user guidance Use the trim valve to make small incremental adjustments and watch the output meter to confirm stability. Check the internal (bottle) meter before long display periods or transport to plan refills. Materials: 304 stainless steel and aluminum alloy. Primary functions: precise trim valve control, dualmeter readout, advanced sealing to prevent leaks.