How to Get Rid of Brown Algae in a Saltwater Tank

Algae in a saltwater fish tank are a necessity for a healthy ecosystem for your fish. However, the algae can quickly get out of hand, leading to a tank overrun with brown algae that must be removed. If you allow the algae to continue to spread, you run the risk of the algae's altering the oxygen content of the water to the extent that your fish can no longer live in it, leading to their death.

Things You'll Need

  • Skimmer
  • Water
  • Fluorescent lights
  • Agitator
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Instructions

    • 1

      Monitor the fish tank thoroughly. Keep an eye out for brown algae every day. It is important to keep some brown algae in the tank.

    • 2

      Skim the water regularly, particularly if it is high in floating particulate matter. Floating debris in the water is a sign of excess dead matter, which allows the algae to grow beyond its means.

    • 3

      Recycle the water in the tank weekly if your water is constantly murky and skimming is not sufficient to prevent the water from becoming overly polluted.

    • 4

      Increase the exposure of algae to lights. The lighting will help to kill off excessive algae growth, as it hampers the algae's ability to grow.

    • 5

      Purchase additional agitators for your tanks. Position them near the excess algae. Algae is agitated by moving water and has a hard time growing when agitated. Consult with a fish-care expert before using additional agitators to ensure that your fish can handle the extra motion.