Hagen Calcium Test Kit for Fresh & Saltwater

I have a saltwater tank and my coral has been eating the calcium like crazy so I need to test frequently and replenish calcium. I love this test! It’s simple, quick and easy to read to determine your calcium level. I tried one other before this one and it was very cumbersome and the test result was not very accurate. This is also the same test that my local fish store uses. Highly recommend!