Easily prevents and treats external parasites, ich and fungus for your fish. This is a safe and efficient method with a super low rate of precipitation of 0.01 mg/1/24 hr. It will not clog fish gills as this solution is extremely stable in saltwater and 60 times less toxic than other available copper medications. By adding a single dose of Copper Power once, it stays at an active level in your aquarium for months. If any of these diseases occur during this time period, Copper Power will fight off the disease in full potency. Don't worry, this solution will not be removed by your carbon filtration and will not cloud the water. To determine if Copper Power still exists in your aquarium water, simply check by using a copper test kit.