There are a few things you can do to clean the bottom of a pond:

  1. Use a plunger to suction onto the bottom of the pond and pull until all the water is drained out. This will remove any dirt, leaves, and other debris that may have built up on the bottom over time.
  2. Use a vacuum cleaner with hose to suck all of the water from around the pond. Make sure to turn off the vacuum cleaner before you start cleaning so that it doesn’t damage anything.
  3. Use a bucket or other large container to pour water into each corner of the pond and then use a hose to suction onto each corner and pull until all of the water is drained out. This will help clean away any dirt, leaves, and other debris that may have built up on top over time.