As temperatures begin to rise in spring and early summer, many pond owners notice a familiar problem returning: green water . One day your pond looks clear, and the next it has turned into what can only be described as pea soup. If you’re wondering “why is my pond water green?”  and more importantly “, how do I fix it?” , this guide will explain exactly what’s happening and how to prevent it. What Is Green Water in a Pond? Green water is caused by free-floating microscopic al