Qian Hu has meticulously developed HYDRA Aquatic Depurator ( Powered by “HYDRO-PURE technology” ) that constantly produces OH radicals to detoxify harmful toxins in the water, HYDRA Aquatic Depurator makes fishkeeping a breeze. • Minimizes frequency of water change thus saving time and greater savings on their utility bills. • Reduces mortality rate of fish by maintaining safe and stable pristine “Hydro-Pure Water”. • Minimizes unpleasant smell from aquarium water. HYDRA Aquatic Depurator ( Powered by “HYDRO-PURE technology” ) comes in various sizes that best suits every aquarium; be it Marine or Freshwater. • Breaks Down Protein and Nutrients • Detoxify Ammonia (NH3) & Nitrite (NO2 - ) • Create and Maintain Safe and Stable Pristine “ Hydro-Pure Water ”