Our Vision: Simplifying Aquatics Through Innovation and Quality

Since 1998, GHL has been driven by a clear mission: to make aquatics easier, safer, and more successful for everyone. We achieve this through cutting-edge, high-quality products designed with reliability and precision.

With a relentless focus on innovation and craftsmanship, GHL has grown into one of the world’s leading manufacturers in the industry. For over 25 years, our aquarium controllers, dosing systems, and LED aquarium lighting solutions have been trusted and celebrated by passionate aquarists worldwide, empowering them to achieve success in every aspect of their aquatic journey.

Thank you for being part of this exciting journey with us!

Matthias Gross

Matthias Gross

Founder GHL

Our core products. Take your pick.

Experience proven and unmatched reliability, precision and safety: Designed by professionals for professionals, proudly made in Germany.

What our customers say.

Congratulations to Your IOND!

I would like to congratulate you on your product (Ion Director ), I hope it will continue be so accurate in the long term, send my best wishes to everyone.

Béla S.

Mitras Lightbar 3: Beautiful Light and High Performance

I would like to thank you once again for the great Mitras Lightbar 3 lamps. They provide a very beautiful and uniform light. A check with a light meter has shown that the lamps perform significantly better with the same power consumption as the previous ones.
That’s why I’ve dropped the original plan to use combination lighting for the new tank and only want to work with the MLB 3 lamps.

Jasper C.

Mitras LX7504 Coral Pop

Everything is excellent.
I really must say that I am very satisfied with these superb lights.

Andreas J.

Thanks for the fast help

Thank you for your fast and reliable help – I am always pleased to have chosen the right product and will recommend your products to others.

Gerhard T.

Impressive support

Again I am incredibly impressed by GHL’s levels of support 🙂

Andy O.

Great support

I will make sure to mention your super good support to all my saltwater friends and on the forums I’m using every day.

Thanks a lot, now I know where to put my savings…..

Thomas J.

Just thankful!

Thanks so so so so so so much you are a champion Profilux is the best thing ever. Thanks again!

Tony I.

Your support is really great

I would like to thank you and GHL for the super-fast repair.
This once again confirms my trust in GHL as a good partner for my aquariums.

Frank T.

Happy with ProfiLux

First of all I’m very happy with the ProfiLux, it’s doing its job perfectly.

Steven D.

Excellent products and superb service!

It is very pleasant to deal with you. Excellent products, superb service, brilliant responds!

I see that have chosen correct goods at correct people.

Rival B.

Endless possibilities

The possibilities with the ProfiLux controller and all the available accessories are fantastic and the usability makes it’s really fun to come up with more and more great ideas what to automate in my tank next …

Werner P.

ProfiLux is doing great!

And tank is doing great!

Mike D.

 

*) as GHL has customers all over the world, some testimonials have been translated from other languages into English

GHL makes the difference.

Perfect

Finding success in your hobby can be easy . With our products, you are able to:

  • Perfectly simulate the natural environment for your livestock.
  • Easily create and maintain a biological balance.
  • React immediately if something needs your attention.

Our free PC SoftwareGHL Control Center, as well as our Apps, Webserver and myGHL cloud service keep you informed at all times.

Versatile

Our GHL Aquarium Technology product line consists of:

  • ProfiLux® Aquarium Controller
  • Mitras® High-Power LED-Luminaires
  • GHL Doser 2
  • Ample accessories and modular equipment

Alone or together, our modular products are the perfect match for your hobby.

Safe

Once up and running, you will love the ease and safety you get from using our products. You are also well equipped for the future because:

  • New products are constantly being added.
  • Your GHL system grows as needed and is expandable with nearly no limit.
  • You can simultaneously control and monitor several systems all from one controller (Above: Long-term Benthology research installation, IFM Geomar, Kiel).
  • We work closely with research facilities all over the world to bring you the latest in scientific grade measurements and data.

Read more about interesting application examples here.

News. Stay up to date.

Mastering Alkalinity: Key to Thriving Corals and a Balanced Aquarium

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…

The Science Behind Coral Fluorescence: Understanding the “Wide-Band-Blue”

Fluorescent Proteins and the Ideal Spectrum for Vibrant Coral Colors Have you ever wondered why corals glow with such vibrant, otherworldly colors under aquarium lights? The secret lies in coral fluorescence, a fascinating process that involves special proteins that absorb and re-emit light in stunning hues. Whether you’re a hobbyist, coral breeder, or professional, understanding…

The Benefits of Automatic Fish Feeders for Aquariums

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…

GHL @ Instagram

Start the New Year with GHL – Don’t Miss Out on Our Special Coupon Offer! 🎉🧨

The New Year is just around the corner, and there’s still time to take advantage of our holiday coupon promotion! 💥
Make your 2025 brighter with an extra bonus when you shop at the GHL Store.

🎁 Get Up to 200 $ Extra – For Free! 🎁

When you purchase a coupon, we’ll add a bonus coupon to your account – completely free! Here’s how it works:

Choose Your Bonus:
•Buy a 1000.00 $ coupon and receive an additional 200.00 $ coupon for free
•Buy a 500.00 $ coupon and receive an additional 90.00 $ coupon for free
•Buy a 250.00 $ coupon and receive an additional 40.00 $ coupon for free
•Buy a 100.00 $ coupon and receive an additional 15.00 $ coupon for free
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 💡🌊💻

#reeftanksofinstagram #aquascape #reels #reefaholiks #eatsleepreef #reefscape #marinefish #reeftank #reef2reef #reeffish #fish #allmymoneygoestocorals #newyear #saltwateraquarium #reefaquarium #nanoreef #spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank

Start the New Year with GHL – Don’t Miss Out on Our Special Coupon Offer! 🎉🧨

The New Year is just around the corner, and there’s still time to take advantage of our holiday coupon promotion! 💥
Make your 2025 brighter with an extra bonus when you shop at the GHL Store.

🎁 Get Up to 200 $ Extra – For Free! 🎁

When you purchase a coupon, we’ll add a bonus coupon to your account – completely free! Here’s how it works:

Choose Your Bonus:
•Buy a 1000.00 $ coupon and receive an additional 200.00 $ coupon for free
•Buy a 500.00 $ coupon and receive an additional 90.00 $ coupon for free
•Buy a 250.00 $ coupon and receive an additional 40.00 $ coupon for free
•Buy a 100.00 $ coupon and receive an additional 15.00 $ coupon for free
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 💡🌊💻

#reeftanksofinstagram #aquascape #reels #reefaholiks #eatsleepreef #reefscape #marinefish #reeftank #reef2reef #reeffish #fish #allmymoneygoestocorals #newyear #saltwateraquarium #reefaquarium #nanoreef #spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank
...

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Feed mode at 🍽️

With our Profilux 4 & its countless possibilities, everyday situations become even easier 💪🏼
During feeding mode, all the pumps in the aquarium switch off to make it even easier for your fish to eat 😊

GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #usa #starsandstripes
#4thjuly #reefjunkie #love #reefrevolution #ghlaquariumproducts
#ghl #coraladdict #flags
#independenceday

Feed mode at 🍽️

With our Profilux 4 & its countless possibilities, everyday situations become even easier 💪🏼
During feeding mode, all the pumps in the aquarium switch off to make it even easier for your fish to eat 😊

GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #usa #starsandstripes
#4thjuly #reefjunkie #love #reefrevolution #ghlaquariumproducts
#ghl #coraladdict #flags
#independenceday
...

100 0 instagram icon
A great tank 🔥

@viking_reefing uses our range of control & dosing products 💪🏼
-How do you like it? 

GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #usa #starsandstripes
#4thjuly #reefjunkie #love #reefrevolution #ghlaquariumproducts
#ghl #coraladdict #flags
#independenceday

A great tank 🔥

@viking_reefing uses our range of control & dosing products 💪🏼
-How do you like it?

GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #usa #starsandstripes
#4thjuly #reefjunkie #love #reefrevolution #ghlaquariumproducts
#ghl #coraladdict #flags
#independenceday
...

151 2 instagram icon
Healthy fish & corals thanks to perfect water values 🐠🪸
-No problem with our Profilux 4, the Doser & the KH-Director 💻

Credits: @angelica_reef 
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting
#reeftanksofinstagram
#aquascape #reels #reefaholiks #eatsleepreef
#reefscape #marinefish #reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals
#reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank

Healthy fish & corals thanks to perfect water values 🐠🪸
-No problem with our Profilux 4, the Doser & the KH-Director 💻

Credits: @angelica_reef
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting
#reeftanksofinstagram
#aquascape #reels #reefaholiks #eatsleepreef
#reefscape #marinefish #reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals
#reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank
...

97 2 instagram icon
Hardy shows off his wonderful reef 🙌🏻

-Perfectly staged with our Mitras LX7 7506 (Coral Pop) 
-Controlled & dosed by Profilux 4, KH Director, Maxi 2.2 & Doser 2.1
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 💡🌊💻

#reeftanksofinstagram
#aquascape #reels #reefaholiks #eatsleepreef
#reefscape #marinefish #reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals
#reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank

Hardy shows off his wonderful reef 🙌🏻

-Perfectly staged with our Mitras LX7 7506 (Coral Pop)
-Controlled & dosed by Profilux 4, KH Director, Maxi 2.2 & Doser 2.1
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 💡🌊💻

#reeftanksofinstagram
#aquascape #reels #reefaholiks #eatsleepreef
#reefscape #marinefish #reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals
#reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank
...

218 0 instagram icon
Want some freshwater vibes?

Our @aqua_do_douce shows us his wonderful 800 liter fresh water biotope 🔥❤️

Controlled by GHL Profilux 4 
Illuminated with 4x Mitras Lightbar 3
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting
#reeftanksofinstagram
#aquascape #reels #reefaholiks #eatsleepreef
#reefscape #marinefish #reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals
#reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank

Want some freshwater vibes?

Our @aqua_do_douce shows us his wonderful 800 liter fresh water biotope 🔥❤️

Controlled by GHL Profilux 4
Illuminated with 4x Mitras Lightbar 3
————————————————————————————-
GHL Your source for first-class aquarium controllers, dosers, and LED lighting
#reeftanksofinstagram
#aquascape #reels #reefaholiks #eatsleepreef
#reefscape #marinefish #reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals
#reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank #reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium #ghl #coraladdict #summertime #ilovemyreeftank
...

28 4 instagram icon
Our promoterian @takeabreakhaveakitcat_ shows us her beautiful tank! 😍

Conrolled by Profilux 4, 2.1 Slave Doser and KH director 
The perfect flow is provided by our Versia stream and flow pumps 🌊
_______________________________________________
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank
#reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium
#ghl #coraladdict #summertime
#ilovemyreeftank

Our promoterian @takeabreakhaveakitcat_ shows us her beautiful tank! 😍

Conrolled by Profilux 4, 2.1 Slave Doser and KH director
The perfect flow is provided by our Versia stream and flow pumps 🌊
_______________________________________________
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank
#reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium
#ghl #coraladdict #summertime
#ilovemyreeftank
...

267 3 instagram icon
@inland_reef shows us his beautiful tanks again 😍
Monitoring the water parameters is no problem with the GHL Profilux 4 💪🏼
_______________________________________________
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank
#reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium
#ghl #coraladdict #summertime
#ilovemyreeftank

@inland_reef shows us his beautiful tanks again 😍
Monitoring the water parameters is no problem with the GHL Profilux 4 💪🏼
_______________________________________________
GHL Your source for first-class aquarium controllers, dosers, and LED lighting 🌊💡🪸

#reeftanksofinstagram #aquascape #reels
#reefaholiks #eatsleepreef #reefscape #marinefish
#reeftank #reef2reef #reeffish #fish
#allmymoneygoestocorals #reefbuilders
#saltwateraquarium #reefaquarium #nanoreef
#spscoral #instareef #coralreeftank #marinetank
#reefaddict #reefjunkie #reefkeeping #reefrevolution #ghlaquariumproducts #aquarium
#ghl #coraladdict #summertime
#ilovemyreeftank
...

81 1 instagram icon

Beautiful and perfect aquariums.  Bring the aquarium of your dreams to life.

Take a look at some of our customer’s aquariums run by GHL products.

Enjoy Your Passion…

GHL Takes Care of the Rest.