Find Stockist


D-D Kamoer KH Carer

The KH Carer is a specialist, app controlled device for automatically measuring and controlling the alkalinity within your aquarium.

As a technical manufacturing company, who produce equipment for the medical industry, where accuracy, performance and reliability are essential, Kamoer have worked together with D-D to develop the KH Carer for the European market, combining their experience of high accuracy dosing systems with D-D's knowledge of the specific functionality required for use within a reef aquarium.

Stepper motor driven pump heads, optical sensors, precision pH probe and automatic stirring are all used to ensure each test sample is taken and tested accurately and is packaged into a neat, compact and easy to maintain design to make this unit simple to install and use.

Designed to be connected directly to a D-D P4 PRO dosing pump to allow dosing of other elements on the same app, automatically in proportion to the KH change or independantly as a user set parameter. This function will be expanded to cover other D-D pumps in the future.


Automatic and Manual Testing

In the app it is possible to manually perform an immediate test with the KH Carer or to set up a regular automated testing schedule.

Automatic schedules can be programmed to test between 1 and 24 times per day, this can be every day of the week, certain days of the week or a set number of days, giving the user full flexibility.

After each test the result is shown on the units display for quick reference along with the time/date the test was performed, if an automatic schedule is set the time/date of the next test will also be displayed. In the app a full data log is shown for both pH and KH along with any automatic additions of KH buffer solution if the dosing option is activated.

Automated dosing of KH Buffer

Automated KH maintenance can be activated to maintain a stable and consistent level. Once the test has been performed a dedicated built in dosing channel will activate to add a liquid buffer raising the KH in the aquarium to the user defined set point.

The amount of buffer added in one dose can be limited to avoid any large single additions. If the volume to be dosed is higher than the amount allowed in one addition an automatic dosing schedule will be created to break the dose into smaller increments over a period of time and displayed in the app.

Settings in the app allow for the use of the standard Kamoer KH buffer or any other brand of KH buffer solution.

WiFi Cloud or Bluetooth App Control

The Kamoer KH Carer is fully app controlled through your smart phone or tablet. The free app download is available in both IOS and Android versions.

Using the Kamoer Remote app it is possible to choose between connecting the pump through your home router allowing access to the unit from anywhere in the world or use a local Bluetooth connection to connect directly from your mobile device. Both options will give you full access to all settings.

The app allows calibration, firmware updates (when connected via a home router), testing schedules, data monitoring as well as testing mode and dosing modes to be set.

Included with the Kamoer KH Carer

  • KH Carer Unit
  • pH Probe
  • Glass sample beaker
  • 5ml Glass measuring cylinder
  • 10ml Measuring cylinder
  • High precision digital scales
  • pH 4 and 9.18 Calibration solutions
  • KH test reagent
  • 5 x 2m colour coded PVC tubes
  • Tube holder
  • Quick release twist lock hose connectors
  • Stirring bead
  • Prefilter capsule
  • KH Buffer powder
  • 10ml Syringe
  • Power supply

Warnings and Alerts

With any equipment that is relied upon to perform automated processes on a reef aquarium, it is important that any abnormalities are shown in real time so that any issues can be corrected.

Along with the inbuilt monitoring of the dosing, reagent and waste containers, (if used), the KH Carer will alert when attention is needed and various alert parameters can be set or are already active.

Push notifications can be enabled for test results that are out of your set range, such as, if a test result is abnormal compared to the last, if the reagent is not detecting properly or if the pH probe is not reading correctly. There is also an in app notification which prompts you to recalibrate the unit that will show after reset conditions.

The D-D Kamoer KH Carer can also be set to perform an automatic second test to confirm an abnormal reading or automatically increase the rate of testing until the KH is within the desired range. The LCD display on the front of the unit will show high, low, or normal with the last tested KH and pH readings for quick reference.

Colour Coded tubes

For ease of use the hose connection ports on the back of the unit are colour coded and match the hoses provided with the unit. This allows you to identify each hose without having to chase it back through your cabinet, and will help to prevent hoses being mixed up or incorrect installation. Easy release twist lock connectors make connecting and disconnecting hoses simple, even in a confined space.

Dosing pump heads

As standard the Kamoer KH carer comes with four easy to access dosing pumps. Three of the pumps are stepper motor driven and high accuracy, these are used for taking the sample water from the aquarium or sump, dosing the test reagent and for the addition of the KH buffer solution. The fourth is a long life geared pump for removing water from the test beaker during the pre-test flushing and washing cycles.

All hoses leading to and from the pump heads can be easily changed and accessed without having to dismantle the unit or requiring the use of any specialist tools. A hinged magnetic side panel allows simple access to the pump heads and ph probe connector.


  • App controlled
  • Fully automated testing and dosing
  • IOS and Android remote WiFi control or local Bluetooth control
  • In app graphs showing pH and KH test results
  • Data reporting on test results and dosing volumes
  • User defined set KH level
  • Fully automated KH reagent dosing with automated dosing plan
  • User defined maximum KH solution additions and intervals
  • Programable minimum / maximum pH and KH levels
  • User defined re-testing in the case of a high/low reading or abnormal reading
  • Display screen showing status and last test details
  • Progress bar and real time testing shown on unit during test
  • High precision stepper motor driven pump heads
  • Pharmed long life pump tubing
  • Colour coded tubing for ease of identification
  • Automatic and manual test mode functions
  • Pump heads can be individually calibrated
  • Built in memory with all data and programming stored on unit so that test parameters are not lost if WiFi or app connection not active
  • Reagent, KH dosing solution and wastewater bottle monitoring
  • Push alerts on connected mobile device for detected abnormal readings and low solutions
  • pH calibration
  • Automated magnetic stirrer
  • Glass test beaker
  • Large stirring bead
  • User defined test beaker repeat flushing
  • Real time clock with battery backup
  • Included digital scales and measuring cylinders for accurate pump calibration
  • Optical sensors for reagent drip counting
  • Automatic calibration warnings
  • DIN port for connection and expansion with other Kamoer / D-D dosing pumps
  • Firmware updatable via the Kamoer Remote app
  • Pump heads easily serviceable


  • 230mm (L) x 120mm (W) x 338mm (H)
  • 2.8 inch LCD display
  • 24V 1.9A DC Power supply
  • 3mm x 5mm PVC tubing
  • 1-24 test per day
  • 50ml sample volume
  • 1-10 times test beaker flushing
  • Testing frequency, daily / every ‘X’ days / specific days
  • 3 x Stepper motor pump heads
  • 1 x Geared motor pump head
  • BNC pH probe connector