GHL Doser 2.1


Precision and Innovation. The Doser that can just do more.

The high-quality technology inside the compact and modern GHL Doser 2.1 provides precise and straightforward dosing and includes many more features. With the free GHL Connect App or the cloud service myGHL, you can access your Doser from anywhere in the world to start dispensing programs or check the levels of your metering liquids.

Comfortably operate the device from your smartphone or your PC. The connection is possible via WiFi, LAN, and USB.

The GHL Doser 2.1 is available as a Stand Alone (SA) Unit and a Slave Unit.


Refilling and changing of small amounts of water.

The 24V stepper motors allow precise dosing even at the smallest flow rates (0.1 ml).

  • Up to 150 doses per day
  • Easily chose dosing times via software (GHL Control Center).
    Automatically: Up to 150 individual doses per day automatically distributed
    Individually: Up to 8 doses per day individually set
  • Each pump can be set separately
  • Conveying capacity and dosing:
    8-45 ml / minute (precisely adjustable to 0.1 ml)

The LEDbacklit GHL Logo in the housing cover serves as a status indicator. Various colors show you at a glance, the condition of your system.

  • White = Configuration mode
  • Blue = Normal
  • Green = Amount of liquid in the container is OK
  • Yellow = Warning threshold amount of liquid undershot
  • Red = Alarm threshold amount of liquid undershot

Learn more

Keep track and control of the liquid levels in your containers. An alarm signals that the minimum quantity has been reached.

  • Magnetic Stirrers
  • External GHL Control Pad (4,3” Touch screen)
  • Temperature sensors and Level sensors

Programming and operating the Doser 2 Stand Alone is easily accessible via the free PC software GCC, app and cloud service myGHL.

The connection can be made via WiFi, LAN, or USB.

  • We only use durable and quality materials.
  • The pumps on our Dosers all have chemical-resistant tubing and stainless steel motor shafts.
  • The housing is robust and made of hard-waring aluminum and durable plastic.

GHL Doser 2.1 is available in two different models:

  • Stand Alone (SA): With integrated control
  • Slave: Without control, control via GHL Doser 2/2.1 SA, GHL Maxi Doser, ProfiLux Aquarium Controller

In addition, select between white and black (cover).

Do you need more pumps? No problem: Depending on the controller, the system is expandable to a total of 32 pumps.

  • Stand Alone, ProfiLux 3 + one or more Slave Doser (GHL Doser 2/2.1 Slave or GHL Maxi Doser Slave), 16 pumps in total.
  • ProfiLux 4 Controller + one or more Slave Doser (GHL Doser 2.1 Slave or GHL Maxi Doser Slave), 32 pumps in total.

The ProfiLux Aquatic Bus provides reliable and interference-free data transfer, even over long distances up to 100 m (300 ft.)

Color: Black or white

Dimensions: 220 x 150 x 76 mm (without pumps)

Variants: 2-4 pumps with stepper motors, up to 45 ml / minute

Models: Stand Alone, Slave

GHL Doser 2.1 white

Also available with black cover.


Did you know that you can use the Stand Alone Doser also as a Slave Doser?

Simply activate the Slave Mode with a single click in the GCC.


Stand Alone and Slave Doser. An Efficient Team.

Do you need more than one device? If so, the GHL Doser 2.1 is perfect for you because the Doser can be expanded into an efficient dosing system.

The Stand Alone unit has integrated control electronics. With it, you can additionally control other Slave Doser (GHL Doser 2/2.1 Slave or GHL Doser Maxi Slave) units.

The Slave Doser has an interface for control via the Stand Alone Doser (GHL Doser 2/2.1 SA or GHL Doser Maxi SA) or the ProfiLux Controller.

You can control a total of 16 pumps independently.

The settings for all the pumps can be adjusted easily and clearly via the GHL Connect app, myGHL or GHL Control Center. Even when you are not at home, you can still access the Doser via the myGHL cloud service.

The highly accurate 24 V stepper motors allow you to perform up to 150 doses per day. Precisely adjustable to 0.1 ml!

When determining the dosing times, you can either have the doser automatically spread the doses evenly throughout the day OR individually distribute up to 8 doses per day at specific times of the day.

Stand Alone and Slave Doser. Ports.

GHL Doser 2.1 Stand Alone

Realize the full potential of GHL Doser 2.1 Stand Alone:

You can also connect up to 2 Level sensors to monitor the water level in your basin and a temperature sensor for checking the water temperature. You can even use our Magnetic Stirrer to ensure that fluids are always mixed prior to dosing.

GHL Doser 2.1 Slave

Expand your Stand Alone Doser or operate the Slave Doser with a ProfiLux Controller.

The connection is made without interference via the PAB Aquatic bus PAB cables.

Quality and Functionality. Down to the Smallest Detail.


Each pump can be operated manually via the push buttons on the front panel. This allows you to quickly post-dosing, deflating the tube vent or suctioning liquids.

Did you know that you easily can upgrade your GHL Doser 2.1? We offer upgrade kits from 2 to 3 pumps and from 2 to 4 or 3 to 4 pumps as Doser Accessories.

Maintenance & wear parts

Doser 2.1 pumps are largely maintenance-free. For optimal performance, we recommend occasionally cleaning and removing dust and other impurities from the inside of the pumps. The pumps must never be lubricated in any way!

Tubes, pumps and motors are wear parts, the life time depends on the use frequency, flow quantity and environmental conditions. When malfunctions (e.g. insufficient flow, losing prime, leakage, increased operation noise) or mechanical damages occur the wear parts must be replaced. Due to the maintenance-friendly design all wear parts can be replaced easily, all wear parts are available as accessories.


Are you in need of technical support or would like to have a buying guide?

If so:

Then join the growing GHL community by navigating to our dedicated support forum! Our GHL Support Forum offers you direct contact with the GHLTeam and our wide customer base and can provide you with a wealth of tips and guidance. Just make sure you stop by!