Tap water may contain copper leached from pipes and it can accumulate in the aquarium. Some fish species are very sensitive to copper treatments, therefore, follow medicating directions carefully. Copper should not be used or evident in aquariums with invertebrates, including snails, shrimp, crayfish and corals, or in aquariums or ponds with plants.
This kit does 90 tests and can be used in freshwater and saltwater aquariums. Kit contains: a dropper bottle for accurate dispensing of test solutions, easy to read instructions and a color chart, a non-staining glass test tube with snap-tight cap. Range is as follows for fresh and salt water: 0.25 PPM, 0.5 PPM, 1.0 PPM, 2.0 PPM, 4.0 PPM.
Fill a clean test tube with 5ml of water to be tested (to the line on the bottle).
Add 10 drops of test solution, holding dropper bottle upside down in a completely vertical position to assure uniformity of drops added to the water sample.
Cap the test tube and shake the tube for 5 seconds. Do not hold finger over the open end of test tube, as this may affect test results.
Wait one minute for the color to develop.
Remove the cap. Hold the test tube upright over the white area on the color chart and view the color of the solution by looking down from above through the tube from top to bottom. Compare the color of the sample with the printed colors.
Even a very faint color indicates the presence of copper. The closest color match on the test chart indicates the total PPM of total copper (free and chelated) in the water sample.