do i need reverse osmosis filter for saltwater aquarium?

according to wiki reverse osmosis will:
It is most commonly known for its use in drinking water purification from seawater, removing the salt and other substances from the water molecules. However, the process is also used for filtering many other types of liquids.
but i asked and it answer it is beneficial. do i need reverse osmosis filter. or it will remove the salt in my aquarium.


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3 Responses to “do i need reverse osmosis filter for saltwater aquarium?”

  • Rahl:

    It is VERY beneficial both in fresh water and salt water aquariums, do you need it? No.

    The general idea of it is making hard water soft, and very soft water manageable to sustain a reasonable pH, gH, kH, etc.

  • Aphotic:

    Whether or not you need an RO/DI filter for your saltwater aquarium will depend on the species you are keeping, and the quality of your local tap water.

    You use an RO/DI filter to remove impurities from your TAP water, not your aquarium.

  • Ianab:

    Depends on the quality of your tap water. You use a R/O filter to prepare your tap water before you add it to the tank.

    If your tap water is clean, soft and low nitrate, then you can pretty much just add the marine salt mix and have something very close to sea water.

    But if your tap water is a bit suspect, hard and full of random dissolved crud, then using a R/O filter to clean it up first is a good idea for sure.

    Ian

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