ION Director, Single Device


The ION Director® is designed to work in conjunction with a GHL Doser 2.x Standalone or a ProfiLux® Aquarium Controller 3 or 4 with a Doser 2.x EXT for operation.

This product is the single device only!

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Additional information

Product color

Black, Patriotic, White

About ION Director®

The ION Director is a measurement device for the automated monitoring and control of Ca, Mg, K and NO3.

The ION Director® (IOND for short) uses state-of-the-art ion-selective technology to automatically and accurately measure essential water parameters – calcium, magnesium, potassium, sodium and nitrate – with maximum comfort and affordable operating costs.

The precise and durable multi-ion sensor, specially developed by GHL for seawater analysis, requires no reagents, cost-effective calibration liquids are used for the automatic calibration. Inaccurate, time-consuming and costly measuring methods, such as test kits, are a thing of the past.

In addition to measurement, the ION Director® System offers many other functions:

Combine the ION Director® with the KH Director® and measure and control the KH value in addition to Ca, Mg, K, Na and NO3

IOND Features

ION Director® Features

  • Unique Multi-Ion sensor
  • No reagent liquids required
  • Precise measurement
  • Cost-effective and harmless reference liquid
  • Measurements per day adjustable
  • Value display via primary device
  • Automated Data-logging
  • Automated liquid supply
  • Low maintenance design
  • Seamless integration w/ GHL system

  • WLAN, USB und cloud-service access via primary device
  • Alarm
  • Large LED status indicator

Convenient to program via

  • GHL Connect app (iOS / android)
  • Web interface
  • myGHL cloud service
  • GHL Control Center PC software (GCC)

Professional CAN Bus System ensures reliable and interference-free networking of all network devices.

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

How does the ION Director® work?

The IOND was designed as an accessory device and requires either a GHL Doser 2 Standalone or a ProfiLux aquarium controller (3 or 4) with GHL Doser 2 Slave to operate, see configurations below.

3 pump heads are required to perform the measurement.

To achieve the highest possible measurement accuracy, each test is performed with a freshly calibrated sensor. Two pump heads are used to convey the reference fluids required for this. After automatic calibration, a sample of the aquarium water is pumped into the ION Director®.

After the measurement has been completed, the sample water is pumped out again and collected in a separate container for later disposal.

How can the measured parameters be controlled?

Thanks to the innovative technology of the ION Director®, each parameter can be accurately measured and automatically regulated. If a parameter is too low or too high, the IOND can automatically calculate the amount by which dosages need to be changed to maintain stable values. It is therefore also suitable for different systems such as Balling® (Light) or Triton® .

Choose the optimal control mode for your aquarium and adjust it individually.

After a measurement, the deviation of the real value from the desired value (setpoint) is known. The following control modes operate on the basis of this deviation.

Add-On Control Mode

The set dosing quantities of certain dosing pumps are readjusted depending on the deviation determined, the user sets the quantity (in mL) by which the dosing quantity should change in the event of a certain deviation.

Adaptive control mode

Works similar to the Add-On control mode, but here the user determines the percentage change of the set dosing quantity for a certain deviation.

Configuration Options

The ION Director® can be operated in two ways:


The ION Director® is connected to the GHL Doser 2 (2.1) Standalone via the ProfiLux Aquatic Bus (PAB).

Doser 2 and ION Director

In this configuration, the GHL Doser has control over the measuring process: It controls the dosing pumps and evaluates the measuring results.



The ION Director® is connected to the ProfiLux (3 or 4) and a GHL Doser 2 (2.1) Slave via the ProfiLux Aquatic Bus (PAB).

P4, Doser 2, IOND

In this configuration the ProfiLux has control over the measuring process: It controls the dosing pumps in the Doser and evaluates the measuring results.

Choose the combination that suits your needs best

Whether you prefer the GHL Doser 2.1 or the P4-Slave Doser combination: thanks to the ingenious design, all devices will fit perfectly with each other no matter if stacked or positioned side-by-side.

We also offer attractive sets for the ION Director® and GHL Doser combinations.

Technical Specifications

The ION Director® is designed to work in conjunction with a GHL Doser 2 (2.1) Standalone or a ProfiLux® Aquarium Controller 3 or 4 with a Doser 2 (2.1) Slave for operation.

Color: Black or white
Dimensions: 8.7″ x 5.9″ x 3.0″ (without MUI sensor)
Dimensions: 11.5″ x 5.9″ x 3.0″ (with MUI sensor installed)

Delivery Includes

  • ION Director
  • MUI sensor (Premium), especially designed for the IOND
  • Reference fluids A + B, 500 mL each
  • Flex PVC tube 8 m (26.2 ft”)
  • Power supply splitter cable
  • Inline water filter

GCC, GHL Connect App, Cloud Service

GCC, GHL Connect App, Cloud Service myGHL

GHL Devices are easily accessible via the free PC software GCC , GHL Connect app and cloud service myGHL. (> learn more).


Do you have questions or need technical support?

We’re here to help. First begin by following a few tips:

You have questions about the operation or for system setup?

  • A good start is visiting our Knowledge Base and our FAQs.
  • Download our manuals and tutorials. In most cases, the answers to your questions are answered in there. You´ll find them listed in our download center.
  • Check out our extensive videos.

Still have questions?

  • Take advantage of our extensive GHL support forum. Here, you will find topics and questions that have already been answered by our support team and/or customers. Tips and suggestions can also be found here. If this does not help, then please ask your question there. You will have direct contact with the GHL team and to many users, who can quickly help you.

Do you have a complaint or a defective product?

  • Your first contact should always be the dealer from whom you purchased the products.
  • In case you bought directly from GHL please contact us directly via our ticket system.

Not found what your are looking for?

2 Year Warranty

GHL provides a 24-month limited warranty against all processing and material defects for the IOND. Warranty period begins at the date of purchase.