Achieve a CLEANER, GREENER, PEST-FREE landscape. Prevent UGLY rust or calcium stains caused by irrigation well water. Also automatically fertilize your lawn and/or repel pests every time you water. The American Hydro Siphoning System hooks up to the irrigation supply to dispense these solutions in small doses every time the sprinklers come on. Durable and weatherproof, the Siphoning Feeder System is designed to be used with above-ground (centrifugal) well pumps. Rid-O-Rust® stain preventer, GrassSoGreen® fertilizer and NatureShield® pest repellent can all be poured into the same tank without worry. Rid-O-Rust preventer sequesters iron, calcium and other minerals that can stain landscapes and clog irrigation equipment. GrassSoGreen is a phosphorous-free fertilizer that keeps your yard green all season. NatureShield is made with natural cedar and cinnamon oils to always keep your family and pets safe from mosquitos and other pests. The feed rate is set at approximately one gallon per hour. Therefore, a 15-gallon tank provides 15 hours of watering before requiring a refill.