To make water safe for human consumption, most municipalities chemically treat the water supply. As a result, tap water may be harmful to fish, plants and other aquatic life. In addition, natural characteristics within the water supply and transport system may contribute a number of metallic ions that can cause damage to fish and their environment. Always ensure that fresh tap water is made safe before it comes into contact with fish. Water Prep should be added to a pond whenever tap water is added.
