How to Get Rid of Red Algae in Your Saltwater Tank

Algae in an aquarium is both a blessing and a curse. It can add a natural feel to your tank as well as be a food source for some fish and invertebrates. However, algae can quickly overtake your aquarium if not maintained. There are a few cleaning tasks you can add to your regiment to maintain the red algae growth in your saltwater tank.

Things You'll Need

  • Glass scraper
  • Toothbrush
  • Turkey baster
  • Vacuum
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Instructions

    • 1

      Remove the algae from the sides of your tank with an aquarium glass scraper. These can be found at any local fish store or pet supply store. You slide the scraper over the glass to wipe off the red algae, then remove it from the tank and wipe it clean with a paper towel.

    • 2

      Brush clean any live rock or other objects in your tank with a toothbrush. Alternately, you can use a turkey baster to dislodge any algal growth.

    • 3

      Vacuum your tank's substrate to remove any growth or free-floating algae.

    • 4

      Perform regular water changes. This is the only sure way to remove red algae from your tank. Change about 5 or 10 percent of the water once a week and about 25 percent once a month.

    • 5

      Buy herbivorous fish and invertebrates. These will eat the red algae -- not all of the algae though, but enough to help maintain your tank. Fish like tangs and rabbitfish and invertebrates like blue-legged hermit crabs are some of aquatic animals you can add to your tank for this.