Learn About Algae Control for Ponds

pond algae controlOne reason for unclear water is algae blooms, which may appear as pea-green soup or filamentous mats that float to th surface of the water. Algae blooms develop when there is an excessive amount of nutrients (such as phosphate and nitrate) in the presence of sunlight. These nutrients come from tap water, rain runoff, fish waste, and debris.

    Establishing a self-sustaining pond ecosystem is the first order of business in controlling algae.
  • Rocks and gravel provide the perfect substrate for colonizing bacteria. Bacteria eats nutrients that feed algae, which helps keep water clear and algae-free.
  • Plants remove nutrients from the water for their own nurishment. Algae competes for the same nutrients. More plants in your pond will help to starve the algae out.
  • Broad-leafed floating plants such as lillies shade the pond. Algae thrives in sunlight, so adding lots of lilies to the surface will deprive the algae of its sunlight - inhibiting algae growth.

In other words, a pond with a natural bottom, plenty of plants and lillies is a healthier pond with less algae.

The Pond Algae Cycle

  • Fish eat insects and, in turn, feed the plants.
  • Mechanical filtration traps debris. Biological filtration counteracts algae-feeding nutrients.
  • Recirculating pumps add oxygen to the water and allow gasses to escape. Oxygen feeds the fish and the bacteria which feed the plants and starve the algae.
  • There are also some products such as Algae Blocker which tints the water and acts as a type of light filter blocking sunlight as it passes into the water depths, thus depriving the algae of one of its most important needs.
  • Rapidly growing plants in the summer months require more fertilizer than slower growing plants in cooler seasons. If fertilizer tablets are used, they should be applied directly to the roots of such plants, beneath a heavy layer of mud, to prevent the entry of the undesirable fertilizers into the water itself. Never add products containing phosphates and nitrates directly to the water, as this would certainly encourage green algae growth!
  • If you need added algae control, consider adding a UV sterilizer to your system. Some filters come with them built in, others can have a UV sterilizer unit added on. As water passes through the intense UV light which is emitted by the sterilizer it kills micro-organisms (some harmful to fish as well) and ends algae bloom.

      Continue to read about Pond UV Clarifiers

      There are also several liquid treatments to help rid your pond of algae. See: AlgaeFix and Microbe-Lift Pro Blend Liquid

      Remember that after you use an algae-controlling product you may experience large amounts of dead algae floating in and on the bottom of the pond. As this decays, it is very harmful to the fish and the pond ecosystem. If large amounts are present,remove as much as possible by hand, and then the remnants must be broken down quickly to prevent toxic ammonia build-up. (see AP147D Pond Care Ecofix)

    • Learn More about How to Control Algae HERE