What causes alge blooms in ponds?

Answer 1

Algal blooms result from an abundance of nutrients, particularly phosphorus. Too much carbon and nitrogen have also been suspected to cause algal blooms, but little research has been done to prove it. When Phosphorus enters into a water system it causes an increased growth of algal. It usually takes over causing many plants to die. The dead matter becomes food for bacteria that decomposes it. Because of more food for the bacteria, the bacteria multiply and use up the dissolved oxygen in the water. This results in many fish and aquatic insects dying because they cannot survive. This results in a dead area.

Answer 2

Mold mixing with water molecules creates a green substance called mold