Set it once and my CO2 levels have been rock steady for 3 months. No end-of-tank dump, no overnight pH swings. My carpet plants are actually carpeting

<p>Dual-stage design prevents the dreaded end-of-tank CO2 dump that kills fish. Integrated bubble counter and precision needle valve means you dial in exact BPS and it stays. DC solenoid works with standard timers for automated CO2 schedules. Built-in safety pressure relief. Rock-steady output pressure</p>