API KH / Carbonate Hardness Test Kit API® KH Test Kit helps measure carbonate hardness (KH) in freshwater and saltwater aquariums. KH plays an important role in stabilizing aquarium pH and maintaining healthy water conditions for fish and plants. Product Benefits Tests carbonate hardness (KH) Helps monitor aquarium water quality Helps prevent sudden pH swings Supports stable and healthy aquarium conditions Useful for determining the correct dosage of pH buffers Suitable for freshwater and saltwater aquariums Quick, accurate, and easy to use Why KH Testing MattersCarbonate hardness helps stabilize pH in aquarium water. If KH levels are too low, pH may fluctuate quickly, which can stress fish and affect overall aquarium health. Regular KH testing helps keep water conditions balanced and safe. Suitable ForFreshwater aquariums, saltwater aquariums, planted tanks, and routine water quality monitoring. Kit Includes 1 KH test solution bottle Test tube Color chart Easy-to-read instructions Usage ReminderTest aquarium water regularly and always follow the product instructions for accurate results.
