Titan Controls CO2 RegulatorThe Titan Controls CO2 Regulator is one of the best regulators out there, built entirely with solid brass fittings and rugged materials to support years and years of harsh grow room environmental conditions. It will help you dial in your grow room CO2 , and ensure you provide your plants with just the right amount not too much, not too little. This regulator is compatible with multiple Titan Controls controllers, but works with many other 120v CO2