Dual Tank Whole House Well Water Treatment System for problematic well water. Removes up to 20 ppm (parts per million) iron, 11 ppm hydrogen sulfide, and 7 ppm manganese. Operates in a pH range of 5.0 – 9.0. Effective flow rate of 10 gpm (gallons per minute). Includes Mass Transfer Tube for superior contaminant removal, Aeration Tank for removal of gases such as methane, radon, and carbon dioxide along with Volatile Organic Chemicals.