Important note:
This is an expansion module – not a standalone device.
A compatible master controller (Doser 3 SA, Doser 2.x SA, or ProfiLux 4+) is required for operation.
Expand your dosing system effortlessly with the GHL Doser 3 EXT – the perfect high-precision add-on for existing GHL setups. This extension unit adds four ultra-accurate peristaltic pumps with 24V stepper motors and premium planetary gears (Made in Germany), delivering the same legendary precision as the Doser 3 SA – starting at just 0.1 mL per dose!
Key Advantages at a Glance:
Extreme accuracy: Dosing from 0.1 mL up to ~8 mL/min (max. 80 mL/min) – ideal for trace elements, Balling method, NO3/PO4 reducers, Kalk reactors, and more
Ultra-quiet & vibration-free thanks to advanced stepper motors + planetary gearing technology
Seamless integration: Connects directly to a GHL Doser 3 SA (Stand Alone), Doser 2.x SA, or ProfiLux Controller (from Model 4) via PAB bus
Expand up to 16 pumps total (e.g., 1× SA + 3× EXT)
Supports automated tasks like water changes (AWC), ATO, parameter control when paired with a master unit
Durable, long-life tubing with precise calibration for extended maintenance intervals
Includes power supply and tube adapters – ready for quick setup
Sleek design in black or white – matches perfectly with your existing GHL gear
Whether you're scaling up a large reef system, adding redundancy, or fine-tuning multiple parameters – the GHL Doser 3 EXT gives you modular flexibility without compromise. German engineering at its best: silent, reliable, and incredibly precise.
Important Note: This is an extension module – not standalone. Requires a compatible master controller (Doser 3 SA, Doser 2.x SA, or ProfiLux 4+) to operate.
What's Included:
GHL Doser 3 EXT (4 pumps)
24V power supply (country-specific)
Tube adapters
Quick-start guide
Take your aquarium to the next level – add the GHL Doser 3 EXT today and enjoy flawless, expandable dosing precision!
German
English