GHL offers a hybrid aquarium control system that combines cloud convenience with robust local management. Users can access their systems remotely via the myGHL cloud and GHL Connect app, while maintaining full offline functionality through local network and direct USB connections. This ensures continuous operation and control, even if internet or cloud services fail, safeguarding your aquarium setup.
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Discover how GHL technology makes aquarium care smarter, safer, and more consistent. Managing a thriving aquarium is a rewarding challenge. From dosing and water changes to maintaining stable conditions and ideal lighting – there’s always something to monitor. But the more you automate, the less stress you have to carry. Both for yourself and for your aquatic life. At GHL, we design tools that work together as a complete system – including our ProfiLux aquarium controller, dosing units, sensors, and high-performance lighting – all connected and customizable to suit your setup. Whether you’re caring for a reef, a planted aquarium, or a professional installation, GHL automation gives you reliability, precision, and peace of mind. Automate Water Changes with Confidence Regular water changes are vital – but they’re also time-consuming and easy to postpone. Using the ProfiLux controller in combination with GHL level sensors, you can automate water changes based on…
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Something New is Growing: ION Director Technology Expands into Greenhouses While many of you are already discovering the benefits of the ION Director in aquariums and aquaculture systems, we’re excited to share a glimpse of what’s coming next. Behind the scenes, we’re working with a professional partner from the horticulture industry to develop a specialized version of the ION Director for greenhouse applications. This new system will be able to measure key plant nutrients like calcium, magnesium, potassium, ammonium, nitrate, and phosphate—directly from the water used in modern greenhouse irrigation systems. Planned release: Autumn 2025 Available exclusively in our Industrial Line package Why does this matter to you now? Because it highlights just how far this technology can go.The ION Director stands for proven, future-ready technology – a platform that’s evolving to meet the needs of serious water management. Whether you’re growing corals or tomatoes, our mission is the same:Accurate,…
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How ProfiLux is Used in Large-Scale and Research Applications Advanced Monitoring and Control for Public Aquariums, Aquaculture, and Scientific Research Managing water quality is essential in public aquariums, aquaculture facilities, and scientific research, where stability, precision, and automation are critical. In these applications, even slight fluctuations in water chemistry, oxygen levels, or temperature can have significant consequences. GHL’s ProfiLux Industrial Line (IL) and standard ProfiLux 4, combined with KH Director® and ION Director®, provide comprehensive automation and monitoring of all crucial parameters: pH and KH (carbonate hardness) – Ensures buffer stability and pH consistency. Temperature – Prevents thermal stress and seasonal instability. Salinity and Sodium (Na) – Maintains proper osmotic balance for marine species. ORP (Oxidation-Reduction Potential) – Tracks water quality and organic waste breakdown. Dissolved Oxygen (O₂) – Is essential for aquarium inhabitants. Calcium (Ca) and Magnesium (Mg) – Essential for coral growth, shell formation, and metabolic stability. Potassium…
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Mitras LX – exceptional control, flexibility, and performance The Mitras LX7 and Mitras LX7 IL series by GHL represent cutting-edge LED lighting solutions designed for aquarists who demand exceptional control, flexibility, and performance. These fixtures offer three distinct operating modes to adapt to a wide range of setups and preferences: Standalone, Master-Slave, and ProfiLux-Slave modes. Additionally, the system integrates seamlessly with advanced technologies, making it ideal for both hobbyists and professionals. Operation Modes Standalone Mode In Standalone mode, each Mitras LX7 operates independently, utilizing its integrated control system. Users can program and manage lighting schedules, intensity, and spectral outputs directly on the fixture without the need for external controllers. This mode is ideal for aquarists who prefer a straightforward setup or operate a single light fixture. Master-Slave Mode For setups with multiple Mitras LX7 units, the Master-Slave configuration allows synchronized operation. In this mode, one fixture acts as the Master,…
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The ProfiLux system is synonymous with precision, versatility, and reliability Not just in aquatics, but in many other demanding applications. A remarkable example is the use of ProfiLux to control a private swimming pool. Prof. Dr. D. K., a long-time GHL customer, decided to replace his faulty pool control system with a ProfiLux after achieving great success using ProfiLux 4 systems on his 7,000-liter marine aquarium. Highlights of his pool control setup include: Regulation of the heating system, pump, pH levels, and chlorination Highly accurate measurements down to the decimal point Precise water level control, stable temperature regulation, and flexible dosing intervals Since its installation the system has been running flawlessly, ensuring consistently optimal water quality. Your Custom Control Solution Whether for aquariums, swimming pools, scientific experiments, or other applications – ProfiLux offers the flexibility and precision you need. Contact us for more information and let’s bring your project to…
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Alkalinity: Essential for Coral Health and Aquarium Stability In aquarium keeping, water chemistry plays a vital role in the health and stability of your aquatic environment. One key component is alkalinity, or carbonate hardness (KH), which refers to the water’s buffering capacity—its ability to resist changes in pH. This stability is especially important in both freshwater and marine tanks, as sudden pH shifts can harm fish, plants, and corals, which thrive in consistent conditions. Ideal KH levels vary based on aquarium type: for reef aquariums, KH should range between 7 and 11 dKH, with 8-9 dKH often recommended, while freshwater tanks do best around 4-8 dKH, with species-specific needs such as lower KH for Amazonian fish (1-4 dKH) and higher KH for livebearers (4-8 dKH). [mkb-info]While alkalinity and KH are often used interchangeably, they aren’t exactly the same. For a deeper understanding, check the explanation at the end of this…
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Corals glow because fluorescent proteins re-emit absorbed light at longer wavelengths, while chromoproteins add color by reflection. GHL’s “Wide-Band-Blue” spectrum (390–510 nm) excites the cyan and green proteins behind most of the fluorescence; additional channels reach toward violet and red for the rest of the palette — adjustable across the Mitras LX luminaires.
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Simplifying fish care while promoting a healthy aquarium environment Keeping an aquarium comes with the responsibility of maintaining a consistent feeding schedule, which can be difficult for busy aquarists or frequent travelers. Automatic fish feeders provide a convenient solution that ensures fish are fed regularly, promoting their health and stabilizing the aquarium environment. But what are the benefits of an automatic fish feeder? Consistent Feeding for Healthy Fish Automatic fish feeders offer precise, regular feeding schedules that reduce fish stress and prevent health issues caused by overfeeding or underfeeding. Overfeeding leads to waste accumulation, harming water quality and promoting algae growth, while underfeeding can lead to malnutrition. By delivering the right portions at consistent times, automatic feeders help maintain a balanced, healthy aquarium. Maintaining Water Quality Overfeeding can lead to decaying food in the water, which destabilizes water parameters and promotes algae. Automatic feeders prevent this by dispensing controlled portions,…
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Aquarium enthusiasts know the importance of maintaining pristine water quality to ensure the health and vitality of their aquatic life. One of the most effective ways to achieve this is through regular water changes. While manual water changes are a traditional approach, they can be time-consuming, labor-intensive, and prone to inconsistency. This is where automatic water changes come into play, offering a host of benefits and convenience to hobbyists. In this blog post, we’ll explore the advantages of automatic water changes, explain why they are useful, and provide guidance on using the GHL Doser Maxi as a standalone device or in conjunction with a GHL ProfiLux aquarium controller. Why Automatic Water Changes Are Useful Water changes are essential for removing excess nutrients, toxins, and organic waste that accumulate in the aquarium over time. Without regular water changes, nitrate levels can rise, leading to algae blooms and other harmful conditions that…
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