5 Easy steps to control an overabundance of pond algae

An overabundance of pond algae can be the bane of farmers, golf course managers, councils and anyone who has one or more ponds on their land. In general, pond algae control is fairly easy in well-established ponds, it’s when ponds are new that problems can become overwhelming.

Taking the right measures and initiating the correct steps at the initial setup however, will reduce the likelihood of an algae problem in the future. Many of these same steps can also be used to bring pond algae under control in more established ponds that require remediation measures.

  1. Install a pump & filter: A solar pond aerator will turn over the water in the pond, oxygenating and improving the water quality, as well as reducing the number of algae. The size of your pond and the ratio of fish to plant life will determine the size of the solar pond aerator you require, but don’t forget to install a biological filter system to enhance the quality of your pond water as well.
  2. Reconfigure the pond: A properly constructed pond needs 40% of its surface area covering the deeper zones (min 60 cm in depth) to allow for proper aeration and pond algae control. In addition, the surrounding area needs to be landscaped to avoid runoff that contains debris and nutrients from entering the pond, both of which feed the algae. However, if your pond is already constructed, your only option is re-engineer the surrounding landscape to prevent runoff from entering the pond.
  3. Remove debris and sludge: Despite your best efforts, some debris will always enter your pond and whilst you don’t need to remove all of this debris, minimising it is an important step in pond algae control. You can install a surface skimmer that will remove debris on the surface of the pond and use a pond vacuum to clean the sludge from the bottom of the pond.
  4. Add aquatic plants: To keep pond algae under control you need a certain biomass of aquatic plants in a pond, but not just any plants. You need to have both underwater plants to remove any excess nutrients from the water that can feed the algae, as well as floating plants to reduce the amount of sunlight entering the water, breaking the algae’s growing cycle.
  5. Other controls: In an immature pond you can add beneficial bacteria and enzymes to reduce pond algae and improve the water quality, and in a more mature pond you can use an algicide if the problem is severe.

For professional pond algae control, contact BioRemedy on 07 3889 8250 or send us an email.