The 100 GPD AquaFX Barracuda Glacial RO/DI Unit is a state-of-the-art water filtration unit for use in reef based aquariums. Offering several flow rates from 50-300 GPD, aquarium owners have the ability to choose the rate that best suits the specific set up that they have. Boasting an effective, filtration process with a semi-permeable membrane, the inhabitants of your tank will benefit greatly from the increase in quality and consistency of clean water. For many aquarists both beginner and advanced, tap water is often the prime source for replacing the water in your aquarium. But basic tap water has many chemicals that can be detrimental to the growth and health of your tank, including various heavy metal ions such as lead and copper, phosphates, chlorine as well as any total dissolved solids. One of the major benefits of this system is that the aquarist is able to choose the type of carbon that is used in the tank, making for a more efficient and effective filtration based on the specific chemicals instead of generalizing a solution. Reef systems are incredibly delicate biologically, and that is why total and complete control is what the 100 GPD Barracuda Glacial RO/DI Unit provides. This unit takes a step forward from the last model, featuring a quick connect check valve, manual flush kit, inline TDS meter and among many others, an AquaFX 1 micron sediment filter that eliminates even the smallest particulate matter. The water supply is directed to a 1/4" hose bib adapter making connection quick and simple with easy accessibility. With a heavy-duty, aluminum mounting bracket and 6 feet of supply tube, drain tube and product tube, you'll be able to install the unit almost anywhere you want without creating an eyesore. A perfect fit for both hobbyists and large scale professional operations.