There are over 17,400 different types of algae that can appear in ponds. Algae are plants closely related to a fungus that reproduces by spores, or single cell division. Pond algae can survive on food and sunlight. Some algae blooms can be hazardous to humans and livestock.
There are two common types of algae in ponds, planktonic and filamentous algae. There are also numerous resistant algae. Knowing which type of algae is present makes treating a lot easier. Maintenance and chemicals can help in controlling algae in ponds. Planktonic algae characteristics are suspended algae and green water that looks like pea soup. This form of algae is considered a single cell. Filamentous is also known as pond scum, string algae, blanket weed, and hair algae. It usually forms mats on the water surface.
There are a couple of common resistant algae that appears as pond algae. Lyngbya is blue green algae. Algae Diatoms grow on concrete or sand and is brown or gray in color. Pithophora is also known as horsehair algae and grows in clumps. A string alga appears in shallow water and looks like long green hair.
If an alga appears in ponds, it can be treated. The first step would be to manually remove what algae is present and then brush down the sides and bottom of the pond. Vacuum or siphon the bottom of the pond periodically. Weekly cleaning of the filter will also help. If the above-mentioned does not clear up the algae in the pond, then there are chemicals that can be added to dissolve the algae.
Maintenance is a key factor in controlling pond algae. Cleaning the filter, brushing the sides, and not over feeding will all help in keeping the pond free of algae. Try to keep fertilizers away from the pond because algae blooms form on the chemicals used in fertilizers. The depth of the pond can make a difference. The deeper the pond the fewer algae will form. Adding plants can also minimize the amount of sunlight that can reach the bottom of the pond.
Algae can be a nuisance for pond owners. Doing weekly maintenance and cleaning can help control the algae blooms. If algae are still present, then there are chemicals that can help in getting rid of the blooms.