Preorder Discount until Sep. 29th 2025!
Shipping starts from Germany October 13th, 2025.
If you’ve ever wrestled with large water moves, the GHL Doser 3 Maxi was built for you. It combines high flow, precision control, and quiet operation – perfect for Automatic Water Changes (AWC), ATO, and other high-volume jobs. Pre-orders are open now, with introductory pricing through Sep. 29, 2025 – shipping begins Oct. 13, 2025.
Why Maxi?
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High flow, precise control: Up to ~350 mL/min per pump, dosing steps from 0.1 mL, and up to 250 doses/day per pump – evenly distributed or set at exact times.
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Quiet by design: Advanced motor driver technology keeps sound levels pleasantly low – ideal for living spaces and studios.
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Built for AWC & ATO: Native level sensor ports enable fully autonomous routines.
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Connectivity that just works: LAN + Wi-Fi + USB on the Stand-Alone (SA), browser and app control, plus OTA firmware updates.
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Scale it your way: Start with SA (2 pumps), add EXT units as you grow – stack or place side-by-side to fit your space. SA manages up to 16 pumps; with a ProfiLux setup you can reach up to 32.
- Combine with other GHL Dosers: Works with any 4way GHL Doser 2.x and 3 (for smaller volumes) and GHL Doser 2.x Maxi.
Run Stand-Alone or Expand Your System
Start with the Doser 3 Maxi SA for 2 pumps plus LAN/Wi-Fi/USB, 2× level sensor inputs, 1× temperature input, and 2× stirrer ports.
As your setup grows, add Maxi EXT units via PAB—the SA can manage up to 16 pumps, and with ProfiLux you can scale to up to 32. You can even switch the SA into Extension Mode later if your control architecture changes.
Prefer a head start? The SA+EXT Set gives you four pumps ready-to-run. Two separate units can be stacked or placed side-by-side to fit your space and cable routing.
What you can do with Maxi
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Automatic Water Changes (AWC): Program precise exchange volumes on your schedule; safeguard with level sensors for minimum/maximum.
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ATO (Auto Top-Off): Maintain stable levels with sensor-based control.
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Mix & dose: Use the stirrer ports to pre-agitate solutions, then deliver consistent volumes.
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Continuous-run tasks: Designed for longer duty cycles when your project requires it.
Control & ecosystem
Use GHL Connect (app & web) or the built-in web interface over LAN/Wi-Fi. The SA can be reconfigured into an extension later if you re-architect your system. For large installations, tie everything together with ProfiLux control.
Specs at a glance
- Flow: up to ~350 mL/min per pump
- Dose size: from 0.1 mL; up to 250 doses/day
- Interfaces (SA): LAN, Wi-Fi, USB
- Sensors (SA): 2× level, 1× temperature; 2× stirrer ports (SA & EXT)
- Expansion: SA up to 16 pumps; with ProfiLux up to 32
- Dimensions (housing): 220 × 150 × 103 mm (w/o pumps)
Pre-order pricing – ends Sep. 29, 2025
- SA+EXT Set: 679,00 € (intro) – regular 759,90 €
- SA: 369,90 € (intro) – regular 429,90 €
- EXT: 329,90 € (intro) – regular 379,90 €
Availability: Shipping from Germany starting Oct. 13, 2025. Regional pricing may vary; check your local store.
FAQs
Is it quiet enough for my living room?
Yes – the driver and mechanics keep sound pleasantly low for home and office use.
Can I run long sessions?
Yes – Maxi is designed for continuous-run scenarios when needed.
What’s included?
Each unit ships with power supply and tube adapters; the SA includes LAN/Wi-Fi/USB and sensor ports. The Set bundles one SA + one EXT for four pumps total.
What about maintenance?
Peristaltic systems benefit from periodic lubrication and simple wear-part swaps. We offer a purpose-made silicone lubricant – food-safe and easy to apply.
Who should choose the Set?
Most new users. Four pumps cover water exchange, top-off, and an extra channel for other tasks.
Preorder Discount
Pre-order pricing ends Sep. 29, 2025 – secure your unit today and be among the first to receive it from Oct. 13, 2025.
And what about smaller volumes?
For smaller dosing tasks, the 4-pump models of the GHL Doser 2.2 or GHL Doser 3 series are the right choice. They’re designed for precise low-volume dosing, making them a perfect complement to the Doser 3 Maxi. This way, you can cover both ends of the spectrum: Maxi takes care of the high-flow jobs, while the standard Dosers handle fine dosing with accuracy.
