How to Treat Bricks for Fish Ponds

Building and maintaining a clean, healthy environment is critical to preventing bacterial complications in your fish pond. If you are using bricks to outline your pond or as a formation, you will need to do a couple of things first. Despite how clean the bricks look, they may still harbor dirt or harmful chemicals that can harm your fish. Don't use any sealant on the bricks, as the chemical will leeech into the pond.

Things You'll Need

  • Bleach
  • Bucket
  • Power washer
  • 60-grit sandpaper
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Instructions

    • 1

      Pour 1 gallon of cold water into the bucket. Add 1/4 cup of bleach to the bucket and mix with your hand.

    • 2

      Dip the bricks into the bleach for a few seconds to sanitize the brick and kill the microbes.

    • 3

      Spray the bricks on all sides, using the power washer. Remove all hanging bits and any algae. Use 60-grit sandpaper to remove the remaining burrs.