AquaWiz Gen 6AquaWiz KH Controller Automatic KH Monitoring & Control No Test Solutions, No Hassle Maintaining KH levels (alkalinity) in an aquarium can be challenging. The traditional method involves manually mixing an acid like HCl with a water sample and recording the pH change. This process is not only complex and time consumingit often needs to be repeated daily. Say Goodbye to Tedious Testing! The AquaWiz KH Controller revolutionizes this process by