Units Feature: " 100 & 200 gallons per day high rejection thin film membrane. " Heavy duty clear canisters for holding filters. " High capacity carbon & sediment filters. " Provides bottled water quality. " Includes garden hose adaptor & filter wrench. " Quick disconnect fittings. " Manual shut off valve on treated clean water line. " Color coded lines for quick set up & easy identification. Red - In for tap water Black - Drain line for waste water Blue - Out for treated, purified water " Improves the health of your plants & increases nutrient uptake by removing harmful minerals, metals, & pollutants from your water supply.