Talk with the Expert | International and European shipping | Free Shipping for Orders over 69€ | Shipping within 24 hours
GHL DOSER 3 EXT – HIGH PRECISION EXPANSION DOSING MODULE FOR ADVANCED SYSTEMS
The GHL Doser 3 EXT is an expansion dosing module designed to work with advanced aquarium control systems, delivering extremely precise and reliable dosing for both freshwater and marine aquariums. Developed by GHL, this unit is not stand alone and requires connection to a ProfiLux controller (model 4 or higher) or a GHL Doser 2.x or Doser 3 (Standard or Maxi), allowing modular expansion of dosing capabilities. The Doser 3 EXT features advanced 24 V stepper motors combined with planetary gear technology, ensuring smooth, consistent and highly accurate dosing down to 0.1 mL. This level of precision makes it ideal for dosing trace elements, liquid supplements, fertilizers and sensitive solutions where accuracy is critical. Its modular architecture allows highly scalable dosing systems: when connected to a standalone GHL doser, up to 3 EXT units can be added for a total of 16 pumps, while integration with a ProfiLux controller allows expansion up to 32 pumps, making it perfect for complex aquarium systems. Adjustable flow rates range from approximately 8 mL/minute up to 80 mL/minute, maintaining precise control even at very small volumes. Connection via the PAB system ensures stable and reliable communication with the main controller, while the robust construction and advanced technology guarantee long term performance. The GHL Doser 3 EXT is the ideal solution for advanced aquarists and professionals who require expandable, high precision dosing systems.
Key features:
Expansion dosing module, not stand alone
Compatible with ProfiLux 4 or higher controllers
Compatible with GHL Doser 2.x and Doser 3 units
High precision 24 V stepper motors
Planetary gear technology for consistent dosing
Accuracy down to 0.1 mL
Adjustable flow rate from approx. 8 to 80 mL/minute
Highly expandable modular system
Up to 16 pumps with standalone GHL doser
Up to 32 pumps with ProfiLux controller
Stable connection via PAB system
Included items:
EXT dosing unit (black or white)
Tube adapters
Power supply
PAB cable 50 cm
Why choose GHL Doser 3 EXT:
It enables precise and professional expansion of aquarium dosing systems, offering maximum accuracy even for very small volumes and providing a scalable solution for complex and advanced aquarium setups.
_20260221165736.png)
English 
Italiano 
_20260428173630.png)
_20260428173630.png)
_20260428173630.png)
_20260428173630.png)
