How to Use Carbon in a Saltwater Aquarium

The use of carbon in your saltwater aquarium can give the water a desirable, crystal clear appearance. Algae buildup can often make the water in your aquarium appear cloudy or green and cause organic pollutant levels to rise. Harmful toxins can damage your saltwater fish, so it is important to ensure the water in your aquarium remains clear and healthy.

Things You'll Need

  • Carbon
  • Net
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Instructions

    • 1

      Purchase carbon from an aquarium supplies store. Carbon can be found in various forms for use in aquariums, such as a carbon sponge, a carbon pad or in granular form.

    • 2

      Determine the quantity of carbon needed based on the volume of water in your aquarium. The recommended concentration is three tablespoons per 50 gallons of water. If using a carbon sponge or pad, follow the instructions on the packaging.

    • 3

      Add the carbon you have chosen to use in your aquarium. Use a net to place the carbon into the tank to reduce the risk of water contamination.

    • 4

      Calculate the amount of time carbon will need to be left in your aquarium. This will differ depending on the form of carbon you have chosen to use. A sponge or pad should last from one to four weeks, while a high grade of granulated carbon may last up to three months.

    • 5

      Remove the carbon from your aquarium after the required amount of time, using the net.