API Copper Test Kit (90 Tests) \u2013 Detects Harmful Copper Levels in Fresh & Saltwa\n\nKeep your fish healthy and thriving by testing your aquarium water's copper levels regularly with this easy-to-use API COPPER TEST KIT for aquariums. API COPPER TEST KIT allows for the fast, easy, and accurate measuring of copper levels in fresh and salt water, which is particularly necessary for effective parasitic treatment for diseased fish. A low copper level could make the treatment ineffective, whereas a high copper level could cause fish death. Kit reads Copper levels 0 - 4 mg/L and contains 1 Copper test solution bottle, one instructional booklet, one capped glass test tube, and one colour card. \n \nWith API Aquarium products, it\u2019s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are desigy