The KHManager is a specialised, app controlled, stand-alone device, which automatically samples and tests your tank water, then calculates and doses a precise volume of KH solution to maintain a constant alkalinity level within your aquarium. The expandable multi-element dosing functionality uses built-in software to enable you to integrate the KHManager with specific D-D dosing pumps, allowing other elements, such as Calcium and Magnesium, to be automatically calculated and dosed relative to the measured KH usage. Developed in partnership between D-D and Kamoer for the European market, the KHManager combines Kamoer’s experience in the manufacture of high precision medical grade dosing equipment, with D-D's knowledge and understanding of the specific requirements for control of the alkalinity within a modern reef aquarium. The stepper motor-driven pump heads, precision pH probe, twin optical sensors, automatic stirring and flushing protocols are all important features that ensure each test sample is collected, tested and dosed with the greatest possible accuracy. Unexpected high or low readings, (out of trend), are automatically retested to safeguard against sample errors and user-defined limits alert against over or under dosing outside of set parameters.