Simple and safe monitoring of water parameters in aquariums and ponds. Determines the optimal carbonate hardness for freshwater and seawater. Colour test: fill the plastic test tube with the water to be tested, add the reagent drop by drop until the colour changes from blue to yellow. Number of drops = level of carbonate hardness. Usage: when setting up a new aquarium: 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 testing and troubleshooting. Contents: 1 KH quick test, 1 reagent, plastic test tube. Reagent refills available separately.
