Simple and safe control of water parameters in aquariums or ponds. Determination of the optimal total hardness for freshwater aquariums and ponds. Colour test: fill the plastic test tube with the water to be tested, add the reagent drop by drop until the red changes to green. Number of drops = total hardness level. Use: when setting up new water: once a day for the first week, then once a week. On the site JBL/Themes/Aquarium or Pond, you will find detailed information on water analysis and troubleshooting. Contents: 1 rapid GH test, one reagent, and one plastic test tube. Reagent refill available separately.
