Identifying the growth in your pondis the first step to controlling it. Not all growth is necessarily bad. Some types of pond algae, such as chara, act as filters that keep your pond water clear and clean. In order to control and kill algae, ponds should be treated with a pond algaecide several times a season. Our products give you a safe, cost-effective way to maintain algae growth before it takes over your pond. For more information view ourFrequently Asked Questions. | Crystal Blue Algae Control