API KH Carbonate Hardness Test Kit


  • Liquid test for fresh and saltwater
  • Helps detect stress on fish caused by rapid pH shifts, the result of low KH levels
  • Contains color chart, clear instructions and glass tube(s)

10 in stock


The API® KH TEST KIT tests fresh or saltwater aquariums for carbonate hardness (KH), and helps monitor water quality and prevent invisible water problems that can be harmful to fish and plants. Carbonate hardness stabilizes aquarium pH, and can be used to determine the proper dose of pH buffers.



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