Stable water values made easy. Dose trace elements, fertilizers, salts, or water – accurate to the milliliter.
Quick Setup, Flexible Control
Set daily amounts, choose dose frequency, or use timer-based dosing. Each pump runs independently.
Durable by Design
High-quality materials ensure a long service life. Due to the maintenance friendly design wear parts can easily be replaced.
Many Versions – One Proven System
- Stand Alone (SA): With integrated controller, plus inputs for level and temperature sensors
- Extension (EXT): Connects to a ProfiLux or Stand Alone unit
Both versions support level control and ATO functionality when sensors are used.
- For small and large dosing amounts
- As standard or Industrial Line version
Made in Germany
Developed, tested, and manufactured in-house for lasting quality – right down to the smallest detail.
Why GHL Doser is the smart choice
Control & Automation
- Milliliter-precise dosing of fertilizers, trace elements, balling salts, lime water, liquid feed
- Supports ATO (evaporation refill) and small-volume water changes
- Up to 150 doses per day with adjustable intervals
- Each pump individually configurable
- Manual operation of each pump via front panel
High-Performance Hardware
- Durable 24 V stepper motors for accurate micro-dosing (from 0.1 mL)
- Stainless steel motor shafts – also suitable for iodine dosing
- Chemical-resistant Norprene® tubing
- Level indicator and sensor support
Modular & Serviceable
- Expandable to 16 (SA) or 32 pumps (with ProfiLux)
- Easily replaceable parts: tube, pump head, motor
- Available as Stand Alone or Extension model
Connected. Integrated. In Control.
Smart Connectivity
- Wi-Fi, LAN (model dependent), and USB onboard
- Seamless integration with the GHL ecosystem
- Compatible with GHL Doser, ProfiLux, Powerbars, Expansion Boxes with PAB
Reliable System Communication
- Interference-free networking via professional-grade CAN Bus
- Alarm function for added safety
- Status LEDs for system and pump monitoring
Flexible Operation
- Easy control via GHL Connect app, web interface, and myGHL cloud
- Optional setup and configuration via GHL Control Center (PC software)
GHL Doser and Accessories at a Glance
GHL Doser 2.2
GHL Dosers set the Standard Regarding precision and accuracy, nothing compares to our flagship, the GHL Doser. Hobbyists and Research Facilities have relied on it since 1999. This and the ever-growing features added over time until today make the GHL Doser 2.2 a fantastic must-have for every Aquarium. GHL Doser 2.2 Highlights Ease of Use…
GHL Doser 2.2 Maxi
The GHL Doser 2.2 Maxi with a flow rate of up to 320 ml/minute is ideal for automatic water changes, level control, and dosing in larger quantities. Due to the precise 24 V stepper motors, micro-doses of 0.1 ml are also possible Robust mechanics and highly efficient stepper motors even allow continuous operation at constant…
Doser Accessories
Explore our comprehensive range of accessories and discover a wide variety of spare and wear parts for our dosing units. With a focus on long service life, reliable operation, and future-proof expansion options, GHL Dosers represent a smart investment for the dedicated aquarist. Experience the reliability and versatility that GHL brings to your aquatic setup.…