API Test Kit – Copper
Copper, a common treatment for many parasitic infections, must be monitored in an aquarium or a pond. The copper level can drop too low for the treatment to be effective, or can increase to a point that is detrimental to fish health. Copper may even be present in your tap water. This kit allows you to easily and accurately monitor copper levels to maintain copper-based fish treatments at therapeutic levels. Tests copper levels from 0 to 4 ppm. Measures both free and chelated copper. 90 Tests. For freshwater and saltwater aquariums and ponds.
Test Specifications
| Parameter | Value |
|---|---|
| Test Range | 0 to 4 ppm |
| Measures | Free and chelated copper |
| Test Quantity | 90 tests |
| Applicable Environments | Freshwater and saltwater aquariums and ponds |
FAQ
Can this test kit measure copper in tap water?
Yes, this kit can measure copper levels in tap water, as copper may naturally be present in tap water.
Is the test accurate for both free and chelated copper?
Yes, the test measures both free and chelated copper, providing a complete picture of copper levels in your water.
How often should I use this test kit?
It is recommended to test copper levels regularly, especially when using copper-based treatments, to ensure therapeutic levels are maintained.

Melanie Russell –
I’ve used this kit for several months now and it’s been very reliable. The instructions are clear and the results are consistent. I can now monitor copper levels in my freshwater tank without worrying about overdosing or underdosing my fish.
Elizabeth Lewis –
The test strips work well and give accurate readings. I noticed a small variation between tests, but overall it’s a solid tool for tracking copper in my saltwater pond. Easy to use and fits well into my routine.
Jonathan Hodges –
This kit helped me catch a copper spike early. I was using a treatment and didn’t realize the level had gone up. The test is sensitive and shows changes quickly. Highly recommend for any aquarium keeper using copper-based treatments.