Controls the water values simply and reliably: determines the pH and KH values in pond water Easy to use: fill the test vial with pond water, add 5 drops of the solution, swirl gently to mix until the colouring is even, leave it for 1 minute, compare the colour with colour chart. Use: for determining or routinely checking the pH and KH levels in the pond water JBL Online Laboratory: regular checks for a healthy garden pond    JBL has water tests for each water analysis, in the form of quick tests or colour change tests Package contents: quick test, pH and KH test Pond Check, Incl. test vials, pH solution, KH solution, colour scale