How to Find a Leak in a Resin Fish Pond

Finding a leak in a resin fish pond can be a difficult task, but as the shape is rigid, it is significantly easier than finding a leak in a vinyl counterpart. The key to locating a leak in a resin fish pond is locating it across a horizontal plane, using the pond water to aid your search.

Things You'll Need

  • External container or aquarium for fish and plants
  • Grease pencil
  • Sponge
  • Pump
  • Patch kit
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Instructions

    • 1

      Remove your fish and aquatic plants from the resin pond. You are going to be fluctuating the water level in the pond, and adding water from your garden hose. To reduce the risk of harming your fish, you should move them to an external tank or container. Removing your plants is optional, but recommended.

    • 2

      Observe your pond as it leaks. Allow your pond to leak freely, measuring the current water level each day, establishing the number of inches the water level is falling. This is your baseline number for your leak rate. Keep track of this number as it will be useful when you are observing your patched pond and ensuring the leak is patched.

    • 3

      Examine the exposed resin above the water level. Once the leak has leveled off, meaning two or three days have passed without the level decreasing by any measurable margin, begin examining the area now exposed above the water line. Your leak lies somewhere in this area. Use the sponge to scrub the resin clean to make hole identification easier. Circle each leak as you find it with your grease pencil, and continue until you have examined all the exposed resin above the water line.

    • 4

      Pump another two to three inches of water out of the pond. The water level needs to be well below the marked holes, so that the patch has a chance to set before being exposed to the pond water.

    • 5

      Patch the holes according to the instructions on the patch kit. You will have to clean the area surrounding the hole thoroughly. Most patches take at least 24 hours to cure.

    • 6

      Refill your pond. Once you have allowed ample time for your patch to cure, per the instructions, refill your pond. Do not add your fish and aquatic plants yet. Wait a few days to ensure the leaks has been sealed. If the water level continues to decrease at a rate that indicates a leak, about a half inch or more per day, or at the baseline rate you established earlier, repeat the above steps to locate additional leaks.