![Sera kH Test](http://www.kahayupan.com/cdn/shop/products/51i91_-OhNL._AC_copy_{width}x.jpg?v=1601001525)
Sera kH Test
Makes it easy to monitor the carbonate hardness in fresh and salt water
For approx. 390°dKH.
In case of too low KH values we recommend sera KH/pH-plus (in freshwater) or sera pond bio balance (in ponds), in case of too high values we recommend filtering through sera super peat (in freshwater aquariums).