Compare webshops (1)
Sponsored links · Some shops pay us a fee
Sort by:
Shops with other sizes
Simple and reliable monitoring of water values. Determines the ideal general hardness in freshwater aquariums & ponds Colour change test: add reagent drop by drop until colour changes from red to green. Number of drops = general hardness When to use: daily in the first week in newly set up aquariums, afterwards once a week Find detailed information & troubleshooting tips about water analysis on the JBL website in Essentials/Aquarium or Pond Package contents: 1 GH quick test, incl. one reagent and plastic cuvette. Reagent refill separately available