Arka myAQUA 400 is a professional osmosis system with booster pump and In-Line TDS meter. This powerful reverse osmosis system supplies up to 400 litres of the purest osmosis water per day - ideal for freshwater and saltwater aquariums where the highest water quality is crucial. A resin filter for removing the finest residues of silicate, nitrate and many other dissolved organic or inorganic substances (TDS) is optionally available. Thanks to state-of-the-art 3-stage filter technology, the myAQUA 400 reliably removes up to 99 % of all pollutants, including chlorine, nitrate, phosphate, heavy metals and many other undesirable substances. The result: crystal-clear, fish- and plant-friendly water - without any chemicals.Arka myAQUA 400 -Reverse osmosis unit-+ high output: Up to 400 liters/day+ efficient & eco-friendly operation+ triple-stage filtration for maximum purity+ effectively removes pollutants, bacteria and pesticides+ up to 99% salt retention capacity+ easy installation & user-