Thanks to its special formulation, Copper Power is one of the safest and yet most effective copper solutions for treatment of external parasites, such as ich and velvet. Copper Power contains a very stable form of copper medication with low levels of precipitation, and thanks to this it is able to be maintained at higher concentrations of up to 2.5 ppm copper, which is nearly five times the normal toxic level in saltwater. This allows for higher copper concentrations than some medications and more effective treatment protocols, and Copper Power has become the copper treatment of choice for many in the hobby.