The Colombo GH Test kit is a type of pond water test kit that measures the general hardness (GH) of freshwater ponds. GH is a measure of the concentration of dissolved minerals, such as calcium and magnesium, in the water. These minerals can affect the health of fish and other aquatic creatures, so it's important for koi owners to monitor and maintain the GH levels in their ponds.
The Colombo GH Test kit includes a set of test tubes, a dropper bottle of testing solution, and a color chart. To use the kit, you fill one of the test tubes with aquarium water, add a few drops of the testing solution, and then compare the resulting color to the chart to determine the GH level.
The Colombo GH Test kit contains enough testing solution to carry out 40 tests.