An effective treatment for ponds against string algae and blanket weed. This easy to use treatment also encourages pond plant growth. It is safe for wildlife and pets. To increase the product's rate of effectiveness, try to remove as much blanket weed as you can by hand. We recommend that the pond has a good level of aeration while using any treatment. To maintain a healthy pond, regular water changes should be carried out. To treat an affected pond, use every week for one month then as required thereafter.