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Reef Deals Help Center

Reverse Osmosis

(40 items)

Any aquarium owner looking to produce perfect water conditions for their fish and coral ought to get started with reverse osmosis water. The chlorine and chloramines that are poisonous to fish are totally absent from RO water, which also has a pH that is neutral and no water hardness. To flourish, many tropical fish need particular types of aquatic habitats, and RO systems can be your key to creating those conditions in your tank.