What is carbonate hardness? Why is carbonate hardness like life insurance for your aquarium? What is the difference between it and general hardness and how does carbonate hardness work in your aquarium? The biologist Heiko Blessin explains carbonate hardness on site in a blackwater biotope in Colombia in a way that everyone can understand.
Interesting facts about the water test KH / carbonate hardness can be found on the product page under: JBL PROAQUATEST KH Carbonate hardness
Additional information about KH and other water parameters can be found here: Water values