Abundant Flow Water ARO-Omega 4-Stage RO/DI System Reef Aquarium Water Filter, 100 GPD Reverse Osmosis plastic Imported 4-Stage ro/di system with clear housings, garden hose adapter, and filter housing wrench 1 micron sediment filter, 1 micron Carbon filter, color-changing mixed-bed di filter 100 gpd membrane combined with di filter provides 99.9% effective contaminate removal Great for aquariums, Laboratory testing, and other applications where ultra-pure water is necessary 1 choice for reef aquarium hobbies This is an O.E.M. Part