H2O SCIENCE is a Sioux Falls,SD based company that specializes in Aquarium and home Reverse Osmosis systems and all other forms of water treatment. Our company manufactures and designs Aquarium RO and RO DI systems as well as Automation systems, Water softening equipment and Industrial Water filtration systems. Our systems are developed with the specific application in mind. Our aquarium products are built completely in plastic components, quick connect fittings and filtration media specific to the needs of an aquarium environment. Our de ionization systems use only the finest DI media by Resintech. Our Reverse osmosis elements are Dow Filmtec and our pre filtration filters are KX industries and ProFlow. All systems are tested and QC checked before they leave the facility and all systems come with a 3 year warranty and a 30 day no questions asked money back guarantee. If you have any questions regarding our products or service please feel free to email our support desk. We will do whatever we can to help you in your decision or in designing the perfect system for your needs!