Effectively eradicates ectoparasite of both freshwater and marine fish. It has all the advantages of copper sulfate and chelated copper but not the disadvantages. Like copper sulfate it is fully ionic and effective at low concentrations. The cupric (Cu+2) charge is fully active. Like chelates it is safe for fish and it is not precipitated in the filter bed. Unlike both there is more than a 4x concentration gap between the minimal therapeutic dose and the toxic dose. Unlike copper salts it is stable in the aquarium and unlike chelates it is easily removed by chemical filtration. Unlike other copper products it is both highly effective and safe in freshwater as well as marine water. It does not damage the filter bed. Cupramine™ contains 10000 mg/L of copper and 100 mL treats over 500 gallons. Do not use in conjuction with ParaGuard™. Test for copper with our MultTest: Copper™ kit. Marine or freshwater use.