Hydro-Logic® Stealth-RO150™ System with Upgraded KDF85/Catalytic Carbon FilterPerfect for hydroponic gardens requiring up to 150 gallons a day of pure reverse osmosis water. Produces up to 150 GPD (gallons per day) of ultra pure, low PPM water (Flow rates of RO systems are based on source water @ 65 psi 77 500 ppm) Reduces bacterial contamination, heavy metals, chloramines, chlorine, sulfur, and iron Removes up to 98%+ of all contaminants 50% water savings over similar RO filters with your choice of 1: 1 or 2: 1 ratios Same