Marine aquariums contain a lot of very sensitive marine animals and organisms. Due to their delicate nature, they are intolerant to certain contaminants within the water such as chlorine and heavy metals. Pure water is required for regular saltwater changes as well as to replace water that has evaporated from the aquarium. To ensure that the artificial saltwater mix combines correctly, it is recommended to use water that is free of any hardness (0ppm).
To provide the best quality water for this application, we would recommend a reverse osmosis system followed with a deionisation resin stage system. This will provide you with water that has a TDS reading of 0ppm and will be free of chlorine, organics and heavy metals.
