JBL Water Test Set, For freshwater aquariums and ponds, ProAquaTest GH Total hardness

Advanced water test series: Easy and safe control of the water values of ponds and freshwater aquariums, Ideal for determining the optimum total hardness Colour change test: Fill plastic cuvette with sample water, add reagent drop by drop until colour changes from red to green, number of drops corresponds to the total hardness Recommended use for new installations: 1 time per week, later 1 time per month For direct use thanks to complete set with reagent and plastic cuvette, refill reagent available separately Contents: 1x JBL Water Test Set, ProAquaTest GH, incl. 1 reagent and 1 plastic cuvette