Electronically keep track of the calcium levels in your aquarium with the handy Pinpoint Calcium Monitor. Calcium is an important element for your corals and other invertebrates. Without it, they would not be able to form the skeleton structure that allows them to grow. More accurate than any liquid test, this electronic monitor delivers a precise calcium concentration reading every time. The special calcium-selective probe ensures an accurate digital reading. Includes special calibration fluid and user's guide. Requires a 9-volt battery of AC adaptor for operation.

$223.99