Copper Power (Endich) ACP0124B Blue Salt water Gallon A Safe, Effective Copper Treatment For Marine Fish Used At 2.5 Ppm Copper Nearly 5-Times The Normal Toxic Level Of Copper In Salt Water Copper power will not precipitate out of the water and remains active in the water Used At 2.5 Ppm Copper-Nearly 5-Times The Normal Toxic Level Of Copper In Salt Water A safe, effective copper treatment for marine fish Used at 2.5 ppm copper-nearly 5-times the normal toxic level of copper in salt water Copper power will not precipitate out of the water and remains active in the water Used at 2.5 ppm copper-nearly 5-times the normal toxic level of copper in salt water