What causes the algae in my water feature (pond, fountain, stock tank, lake)?

Algae feeds off of excess nutrients that are in the water. These nutrients can be introduced into the water in numerous ways. Some of the most common are food remaining on an animal’s mouth when it comes to drink, leaves, grass clippings and run off. With warm temperatures and stagnant water, anything organic in the water will decompose releasing nutrients that the algae feed off of. The beneficial bacteria, in Healthy Ponds® by Bioverse® spheres, will consume the excess nutrients and starve off the green organic matter.