Pond Skimmers Vs. Biofalls

Pond skimmers and biofalls are two filters necessary to maintain a healthy and clean pond. A pond must have a good filtration system in order to thrive. Both filters have separate functions but work together to maintain clear and toxin-free pond water.

  1. Parts of a Filter System

    • Most ponds use two types of filtration systems that work together to keep the pond water clean. One is called a mechanical filter (pond skimmer) and the other is a biological filter (biofalls).

    Biological Filter Function

    • Biofalls are a type of biological filter. This filter provides a place for beneficial bacteria to grow so that toxins and waste, such as ammonia, can be removed from the water.

    Mechanical Filter Function

    • The skimmer is a large mechanical filter that works by removing particles or debris, such as plant matter, from the water. Debris left in the pond water will rot, causing murky water that may be unhealthy for fish.

    Skimmer

    • The skimmer contains the pond pump and removes any debris before it clogs the pump, which keeps water circulation consistent, then pumps the strained water into the biofalls. Skimmers are usually installed under ground or under a deck just below the water's surface.

    Biofalls

    • This is usually the top structure of the waterfalls. As the water is pumped into the biofalls, the water is aerated, which allows fish to breath easily, and provides a large surface of material for beneficial bacteria to grow. Biofalls are typically made of lava stone or another porous surface.