The Stealth reverse osmosis water filters will produce up to 200 gallons of water per day. The Stealth reverse osmosis water filters will produce up to 200 gallons of water per day. It will remove 98% of chlorine, calcium, excessive minerals, and other contaminants. It will help prevent nutrient lockup by allowing you to know exactly what your plants are getting. No guessing on the amounts of calcium and other minerals in the water. Comes complete with 1 or 2 RO membranes, carbon filter, sediment filter, automatic shut-off cartridge, wall mountable wall bracket, and an inline shutoff valve. The units will hook up to a standard garden hose fitting (3/4"). The Stealth 100 will filter 100 gallons of water per day and the Stealth 200 will filter 200 gallons per day. They come with a 1 year warranty