The ProfiLux® 4 aquarium controller offers everything the ambitious aquarist needs to achieve success.

Designed to excel in every aspect, from form to function the ProfiLux 4 effortlessly handles essential tasks like lighting control, water parameter measurement and regulation, level management, flow measurement, pump control, and much more.

Equipped with the most extensive array of on-board connections, the ProfiLux 4 integrates advanced modules for precise measurement of Conductivity (adjustable for fresh or saltwater), Temperature, pH, and Redox. Additionally, the P4 offers connections for level sensors, flow sensors, leakage sensors, and 1-10V interfaces, ensuring comprehensive control and monitoring of your aquarium environment.

ProfiLux 4 – The Ultimate Aquarium Controller for Ambitious Aquarists

ProfiLux 4 is your all-in-one solution for successful aquarium management, offering precise control over lighting, water parameters, level management, flow measurement, and pump regulation. It features integrated modules for temperature, pH, redox, and salinity/conductivity, along with ports for level sensors, flow sensors, leakage detection, and 1-10V interfaces.

Stay connected with built-in WiFi and USB, giving you access to your aquarium’s status anytime via web interface, app, email notifications, or the myGHL cloud service.

Future-proof your system with effortless upgrades through Expansion Cards or Expansion Boxes. ProfiLux 4 is also available in attractive Controller Sets.

  • Numerous connection options even in the basic configuration, easily expandable at any time
  • Plug & Play: No additional costly modules necessary to connect the accessories listed in the below illustration, such as sensors (e.g. pH, temperature, flow, leakage, level), 1-10V devices and others

ProfiLux® 4 makes the difference.

Highly accurate measurement and control of all relevant water parameters, with alarm function, data logging*, etc.

Unlike, conventional test kits which are time consuming, ProfiLux can continuously monitor and control parameters such as pH, conductivity, redox, temp, etc.

32-channel* lighting control for most life-like simulation of clouds, storm, moon phases, seasonal lighting, sunrises and sunsets.

The realistic lighting control, together with the dimmable lights from GHL, ensures natural lighting and thus promotes the species-specific behavior of your animals.

Unmatched connectivity options. Keep track of all your set-ups, even when having various aquariums, terrariums or ponds.

Get connected with your GHL device via our universal and platform independent user interface GHL Connect, with App, Cloud Service myGHL, Webserver or/and PC software GHL Control Center.

Secure communication is essential for reliable aquarium control, and wireless systems can’t match the safety and stability required. ProfiLux Aquatic Bus uses the professional CAN bus system, trusted in critical applications like automotive, to ensure interference-free communication. It provides dependable links between the controller and devices such as Powerbars, Expansion Boxes, and GHL Dosers, supporting cable lengths of up to 100 meters (300 feet).

More safety through GHL´s own and unique for aquarium use specialized operating system, ProfiLuxOS.

Lifetime free support and industry-leading support options.

Stay Connected. Everywhere.

You have access to the ProfiLux 4 from everywhere in the world and from your home network with any device – no matter if using a smartphone, tablet or computer.

Our our free GHL Connect platform is available as app, built-in webserver and as well as cloud service myGHL. Even when you are away from home, you can check-in on the status of your aquarium and make changes if necessary.

Additionally ProfiLux 4/4e is easily accessible via PC with our free software GHL Control Center.

GHL Connect and GHL Control Center can also be used locally, which makes accessing your device safe and independent from having an internet connection.

GHL Connect

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GHL Control Center

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Unmatched Expansion Options

ProfiLux 4 includes a large selection of expansion options to suit the needs of any aquarist. When you need to add more functions, simply add an expansion card to one of the available expansion slots. No need to buy additional modules, just pop the card in and you’re good to go.

Between Expansion Cards and Expansion Boxes, you can expand the ProfiLux to nearly no limit!

ProfiLux Expansion Cards

GHL Advanced Technology offers ProfiLux Expansion Cards, designed to enhance the capabilities of ProfiLux controllers. These cards are compatible with various models, including ProfiLux II, 3, and 4, and the Expansion Box, providing additional measurement inputs and advanced communication interfaces. The cards are easy to install, allowing for customized configurations while maintaining the compact design of the devices.

ProfiLux Expansion Box 2

ProfiLux Expansion Box 2, a product designed to enhance the capabilities of the ProfiLux aquarium controller system. It offers increased capacity for expansion cards, enhanced connectivity for additional sensors and accessories, and reliable communication through PAB connectivity. The Expansion Box 2 is presented as a versatile and customizable solution for advanced aquarium setups, allowing seamless integration and configuration.

ProfiLux OS – Maximum Safety and Stability

ProfiLux aquarium controllers run with GHL’s very own unique operating system, ProfiLuxOS. This operating system has been specially developed to conduct control tasks for aquariums.

Most operating systems have been designed and optimized for specific applications which, in our opinion, cannot provide the level of safety and performance required to control your valuable aquarium, pond, or terrarium.

ProfiLux OS was built from the ground up for the sole purpose of maintaining maximum safety FOR aquariums. Our custom OS is robust, flexible, and future-proof, offering maximum operational security and optimal efficiency.

 

ProfiLux Accessories – The Perfect Addition

We recognize that everyone has different needs for their aquarium. As such, we provide a huge selection of accessories: Expansion Cards / Expansion Boxes / Probes & Sensors / Dimmable LED-Lamps and LED-Light Bars / Dosers / Stream and Flow Pumps/ Automatic Fish Feeders and much more…

As your needs grow, ProfiLux can grow with you.

Mitras Lightbar 3

Mitras Lightbar 3 by GHL is an advanced aquarium lighting solution designed to enhance aquatic environments with precision and efficiency. Operable via the GHL Connect App, it features seven illumination channels and a full spectrum, optimized for digital photography. The lightbar offers waterproof construction, integrates RGB LEDs for natural lighting scenarios, and supports diverse aquarium setups with customizable spectrums.

GHL Sensors

GHL Sensors offer high-quality monitoring solutions for ProfiLux-controlled aquariums, ensuring precise and reliable measurements. Featuring laboratory-grade quality, these sensors include durable double junction probes for pH and ORP, extra-long cables for flexibility, and galvanically isolated designs to prevent interference. Suitable for both hobbyists and professionals, they support comprehensive environmental monitoring for aquatic life.

Powerbars

ProfiLux Powerbars are engineered for reliable power management in ProfiLux-controlled aquariums, offering seamless integration and automation of essential devices. Each unit connects via the ProfiLux Aquatic Bus (PAB) for interference-free communication. Key features include six individually switchable sockets, robust industrial relays, current monitoring, and an illuminated system status indicator for optimal safety and functionality.

Aquarium Fans

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Pumps

Versia® Flow and Stream pumps by GHL deliver advanced flow management for aquariums, offering precision and flexibility for both marine and freshwater systems. These pumps, powered by brushless 24V DC motors, ensure quiet, energy-efficient operation. The Versia® Controller, when integrated with a ProfiLux® aquarium computer, enables detailed control over flow patterns, speed profiles, and maintenance modes.

ProfiLux 4 features at a glance

  • 32 channel illumination control
  • simulation: clouds, thunderstorm, seasonal lighting, lunar cycle, sunrise
  • pH value
  • water temperature
  • redox / ORP
  • salinity / conductivity
  • dis. oxygen*
  • KH / alkalinity*
  • Ca / Mg / Ka / Na / NO3*
  • voltage*
  • humidity*
  • air temperature*
  • water flow
  • visual and acoustic alarm
  • 16 channel stream and return pump control
  • 32 channel dosing pump control
  • max. 12 level-, flow, and leakage sensors
  • automatic water changes and top off
  • leakage detection
  • 4 fish feeders
  • variable feeding times and amounts
  • 32 universal timers
  • switch outlets, start actions
  • app GHL Connect
  • cloudservice myGHL
  • webinterface
  • desktop software
  • WiFi
  • USB
  • 2x PAB-ports
  • 3x L-ports (4x 1-10V interfaces)
  • 2x S-port (8x switchable outlets)
  • 1x Mitras Lightbar port
  • 2x ports for 4x level, leakage and flow
  • 1x port for DCF or automatic feeder
  • 1x AUX port (4 digital and analog I/Os)
  • 1x LinMon-port (power failure detection)
  • water temperature sensor included

W x D x H: 220 x 150 x 55 mm / 8.66″ x 5.91″ x 2.17″

ProfiLux® is Future-Proof.

Since 1998, the ProfiLux Controller has been the powerful heart and brain of a well-engineered modular system developed and produced in Germany. Though the years, it has proven itself to be a most reliable means of aquarium control. For that reason, it has earned a spot as the most globally recognized aquarium controller earning various awards for its degree of reliability and accuracy. To this day, this modular system continues to grow.

The new ProfiLux 4 is a continuation of the success story of Aquarium Controllers 1-3. As with all our developments, we place a special emphasis on maintaining compatibility with existing products.

Rest assured, ProfiLux 4 is ready for the future.

*) some features may require additional accessories

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    Last updated on: April 22, 2025