Green algae can easily wreak havoc in a pond. There are several reasons that contribute to excessive growth. The primary reason is due to not having the pond regularly cleaned out every year. At Cedar Lawn & Landscaping we recommend a pond cleaning every year to insure your water quality stays clean and clear year round. Another reason is due to not having enough aquatic plants that act as a natural filter. Having large numerous fish in a smaller pond is also another culprit. The fish waste adds up and then in turn causes an abundance of food for the algae. Below we will look at different methods to control and cure algae filled water.
Regular maintenance is key to a happy healthy pond free of green algae. Its recommend to use an aquatic vacuum to remove any sludge that collects on the bottom of the pond. It is usually recommend to do this a few times a season. In the spring, summer and fall after the leaves have fallen. Another option is to add a Sludge and Muck Cleaner. These sludge and muck chemicals are made up of all natural and beneficial bacteria and enzymes that break down the muck. This muck is then converted into a nitrogen gas that dissipates into the pond.
Nualgi is another product that creates a good type of algae called Diatom. The diatom algae competes for the CO2, phosphates, and other nutrients which in turn causes the green algae to die out.
Maintenance for larger ponds might include a pond skimmer. Skimmers help to reduce the need to clean the bottom of your pond because they continually skim the surface of the pond. This action prevents debris from sinking to the bottom. It also makes filter and pump maintenance much easier. Some larger ponds can also use a separate filter that lies on the bottom of the pond. This filter helps greatly when trying to reduce sludge buildup and eliminates the need to vacuum as frequently.
Adding plants is another way to control green algae. They will compete with the algae for nutrients and prevent any growth. Plants also help shade the pond and provide shelter for fish. Some aquatic plants are more beneficial than others when it comes to natural filtration.
Lastly of course you can use a UV clarifiers to control the algae. UV clarifiers work by passing the water through a tube next to a UV bulb. The high intensity light kills off the microscopic algae cells that form the green water.