How to Disinfect Plastic Fish Tanks

Aquariums can be made of glass or a plastic called acrylic. Smaller plastic tanks are molded in one piece, while larger tanks are made of sheets that are bonded together at the seams. The key to disinfecting a plastic tank is to use a mix of bleach and water. Bleach kills bacteria and algae then evaporates leaving no residue that might be dangerous to fish.

Things You'll Need

  • Chlorine bleach
  • Water
  • Spray bottle
  • Plastic blade
  • Soft damp sponge
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Instructions

    • 1

      Pour a mix of 1 part chlorine bleach to15 parts water in a plastic spray bottle.

    • 2

      Spray the mix in the plastic aquarium. Spread the mixture around using a soft sponge.

    • 3

      Scrape off any tough deposits using a plastic blade specifically designed for plastic or acrylic aquariums.

    • 4

      Rinse the tank using fresh water, and wipe it using a soft dry cloth to prevent water spots.

    • 5

      Allow the tank to air dry before refilling it with water.