API Copper (Cu+) Test Kit for Fresh & Saltwater Aquariums by by API
Aquarium Pharmaceuticals' Copper Test Kit tests copper levels in water from 0 to 4 ppm, and measures both free and chelated copper. Always monitor aquarium copper levels when medicating. For use in Freshwater or Saltwater Aquariums or Ponds.
- The accurate way to test aquarium quality
- Tests copper levels from 0 to 4 ppm
- Suitable for fresh & saltwater
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The test kit is hard to read, you could get three different readings from the same sample. If you don't use the kit right you could end up ODing. If you don't clean out the test tube right after a test the tube will become stained and give a copper reading with just RO water. If you hold the tube to close to the card the water will take on the color of the nearest ppm color. And if you hold it not close enough it will make you think that it's not enough copper in the system. Bottom line unless you are just trying to see if any copper is present in your system don't use. If you are medicating get another brand test kit.