ION Director - GHL

CAD $1,349.99
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The current lead time for new IOND Orders is unknown please expect 4-6 month delay for ION Director Order Fulfilment.


Fully Automatic Measurement and Control of Ca, Mg, K, Na, 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. Instead, it uses cost-effective reference liquids for 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.

ION Director® – Features

A compact and precise multi-ion sensor in laboratory-grade quality, specially developed by GHL for seawater analysis, which combines the functions of several sensors.

There is no need for reagent liquids for measuring.

Extreme accuracy due to special electronics, sensors and measuring algorithms developed and perfected by GHL.

Economical measurements due to low consumption and inexpensive reference liquids.

The amount (up to 24) and start times of automatic measurements per day can be adjusted, additional measurements can be started manually at any time.

To achieve the maximum possible accuracy, a fully automatic calibration of the sensor is carried out before each measurement.

If the measured values differ too much from the previous results, ION Director automatically starts another measurement. After its completion, the most plausible values are used. This unique feature, called Double check, avoids inaccurate measurements that may have been caused by air or particles in the sample water or other disturbances during the process.
The threshold values for triggering a double check can be set individually or switched off.

Utilizing the measurement value history, you can interpret past measurement results and react to fluctuations.

In order to achieve stable water parameters, ION Director® can automatically readjust dosing quantities of supplied liquids depending on the measurement result.

The LED-illuminated GHL logo conveniently provides color-coded status indicators. The various colors show you the condition of your system at a glance.

  • White = Configuration mode
  • Blue = Normal operation
  • Green = Measurement or dosing in progress
  • Yellow = Warning threshold – fluid container(s) are running low
  • Red = Alarm threshold – fluid container(s) are empty

GHL devices offer the most connectivity options, you can choose between app, cloud, web interface or PC software via WiFi/LAN or USB.

Through the use of the PAB (ProfiLux Aquatic Bus) connection, IOND seamlessly integrates into the modular GHL system. The PAB connection ensures interference free communication with other GHL PAB-devices such as the GHL Doser 2.1 or the ProfiLux® 4.

The multi-ion sensor is easily accessible thanks to the well-thought-out design of the ION Director® and can be easily cleaned or replaced if necessary.

Find out about measurement results at any time and from anywhere – via app, cloud, web server or Windows software. Display additionally values and states on the ProfiLux 3/4 display or ProfiLux Touch, if present.

The design of the ION Director® meets laboratory requirements. Like all our instruments, it is made of high quality materials to ensure a long service life. 

ION Director® is available in two color options: Black or white

Dimensions (mm): 220 x 150 x 75 mm (w/out sensor)

Dimensions (in): 8.66″ x 5.9″ x 2.95″ (w/out sensor)

ION Director® includes the following:

  • Device with integrated measuring cell
  • Multi-Ion sensor, especially designed for the IOND, incl. calibration liquids
  • Flex-PVC tube 8m (315″)
  • Power-supply splitter-cable

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 Extension Unit 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 the calibration, a sample of the aquarium water is pumped into the ION Director® by the third pump.

Reference fluids and some sample water are 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 (set point) 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:

1. 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.

2. The ION Director® is connected to the ProfiLux (3 or 4) and a GHL Doser 2 (2.1) Extension Unit 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.

ION Director® Sets

Operation of the IOND requires always a GHL Doser with 4 pumps, depending on the configuration either as Extension or as Standalone version.
GHL offers these sets:

  • IOND + GHL Doser 2.1 Standalone 4 Pump
  • IOND + GHL Doser 2.1 Entension 4 Pump
Both sets have a significant price advantage compared to buying separately, they are offered in white and black. The sets include a PAB cable (50 cm / 19.6″).


  • 5
    Working Great

    Posted by James on 2023 Jan 4th

    So long as you follow the setup procedure exactly this thing is excellent. Such a game changer for keeping everything stable (the YouTube videos on the GHL page are excellent )

  • 5
    Ion director

    Posted by Pablo on 2022 May 6th

    Great unit, ensure to follow instructions, it takes a little bit of work to get it setup but it has been running great since. I've compare results with fauna marin test kits and salifert test kits and it's reading very close.

  • 5
    Working great.

    Posted by Unknown on 2020 Jan 2nd

    Initial setup of the doser took a bit but once it was figured out it all came together quickly. Hoses and calibration fluids included. Kh has been steady since installed.