This is a liquid test kit that measures for copper levels. It is usable in both fresh and saltwater aquariums. Most often used to determine if copper is coming in with your tap water and is affecting your invertebrates like snails, shrimp and corals. It can also be used to measure how much copper is in the water if using a copper based treatment vs parasites.

API Copper Test Kit

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This is a liquid test kit that measures for copper levels. It is usable in both fresh and saltwater aquariums. Most often used to determine if copper is coming in with your tap water and is affecting your invertebrates like snails, shrimp and corals. It can also be used to measure how much copper is in the water if using a copper based treatment vs parasites.

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Nice Reassurance of Water Quality

I am new to shrimp keeping and know that they are sensitive to copper. I wanted to make sure there was no copper in my tap water. The test came out clear, so I am very relieved! I probably won't need to use this test kit often, but I'm glad I have it on hand. I will probably test every few months, or when seasons change, just to be sure.