Pond skimmer box – A pond skimmer can be used to get rid of the large debris from the pond. If left in the pond, the leaves, grass and other debris produce toxic fumes that kill pond plants and animals. The pond skimmer is placed at the edge of the pond near the pump. As water is drawn into the pump, it will pass through skimmer dam. Skimmer catches debris in the water. Apply pool putty around any cracks on the sides of the pond skimmer. Use a mixture of plastic patch if the pond skimmer box is separated from the pump to the wall….