How to Get Rid of Green Algae on Aquarium Gravel

Written by ashley kurz
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Algae is a green slimy organism that feeds off of the nutrients in your fish tank. It can create health problems for your fish and also make it difficult to see your fish. The algae also causes the tank to appear dirty and unattractive. Algae can develop in your aquarium pretty quickly, and it takes quite a bit of determination and consistency to get rid of it, or at least control it. You can develop a routine to keep your tank as algae-free as possible.

Skill level:
Moderately Easy

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Things you need

  • Siphon gravel vacuum (sold at pet stores)
  • Algae pad
  • Algae eating plants or fish
  • Algicide

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Instructions

  1. 1

    Avoid overfeeding your fish. Fish that are overfed release more waste than normal into the tank, which will provide nourishment to algae.

  2. 2

    Change about 30 per cent of the water in your tank at least once per month to keep the nutrient level in the tank down, and provide less for algae to feed on.

  3. 3

    Use a siphon gravel vacuum when changing your water to turn the gravel. Any algae sitting on the top layer of gravel will be trapped under fresh rock, and will not be able to feed. This will kill the algae.

  4. 4

    Remove all artificial plants and other tank ornaments as you change the water. Rinse and scrub them thoroughly under plain tap water.

  5. 5

    Use an algae pad to remove algae from the walls of the tank before adding your fresh water.

  6. 6

    Consider choosing a few live tank plants next time you visit the pet supply store. These plants will take in the nutrients in the water, leaving less for the algae.

  7. 7

    Consider adding some algae eating fish to your tank. A plecostamus or even a snail will eat enough algae to supplement your current filtration system and keep your tank clean between water changes.

  8. 8

    Use algicides to clear up a severe case of algae. The algicides tend to work quickly, but they should not be used regularly. Always follow the manufacturer's instructions.

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