The primary job of a pond skimmer is to remove floating debris off the surface of a pond before it has a chance to sink to the pond floor. Removing the unsightly debris before it can collect on the bottom helps keep your pond healthy and beautiful while improving the water quality for your fish. The skimmer also houses and hides the pond pump and plumbing from view, which creates a more natural-looking pond. Combine a mechanical skimmer with a biological filter for optimal pond filtration.