The Sentry I Open-Air System combines an adjustable air-draw venturi with the Sentry Dry Pellet Chlorinator. The combination of aeration and chlorination creates a powerful oxidizer and sanitizer. The Sentry I Open-Air System will treat: iron, iron bacteria, sulfur, sulfate reducing bacteria, black manganese, algae, tannins, arsenic, methane gas, radon gas, low yielding wells and low pH. The Sentry I Open-Air System increases water quality, which reduces maintenance costs on all appliances that utilize water. The system is complete with the chlorinator, by-pass, bladder tank, submersible pump and is pre-wired for an easy install.