EZ-FLO EZKIT-5 5 gal Main-Line Fertilizer Injector System are the next generation of quality injection products from EZ-FLO. Providing added capacity and convenience in a smaller footprint. The proprietary fill system mimics our high capacity design previously only available on our 10 gallon and larger models. The drain valve and fill port provide access for refilling the system without the need to move the tank or disconnect any hoses.