HydroLogic - Stealth-RO300™ System with Upgraded KDF85/Catalytic Carbon FilterIn Store Location : @I4 Our Stealth RO300 comes with the upgraded KDF85 granulated catalytic carbon filter already installed. Perfect for hydroponic gardens requiring up to 300 gallons a day of pure reverse osmosis (RO) water. Produces up to 300 GPD (gallons per day) 12 GPH (gallons per hour) 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,