We are the manufacturer of these popular high-tech products for aquariums:

  • High-Power LED-luminaires Mitras
  • Aquariumcontroller ProfiLux
  • GHL Doser
  • KH Director
  • … and many more.

Read more about the finest products in the aquarium industry here.

Where to buy

GHL Webshop for USA

GHL Webshop for all other regions

If you need help purchasing our products just send us an email to: sales@ghlusa.com.


We take customer service very seriously. In order to best serve you, we offer you several support channels.

For warranties and repairs we recommend to contact your retailer first. If you require additional support please contact us.

For dealers

Interested in selling our products? Please contact us!

If you are from North America: sales@ghlusa.com

Other regions: sales@ghl-kl.de


Are you looking for documents, manuals, software, or firmware updates?

If so, please take a look at our download section.

Free Shipping

Free shipping on all orders over $150.

Help & Support

Do you have questions or need technical support?

We’re here to help.
Please visit our dedicated GHL support page
at www.aquariumcomputer.com.

Shipment to Canada

Looking to order from CANADA?

Submit your order and mailing address
via email to info@ghlusa.com.

GHL News
Current delivery situation at GHL (as of February 24 2020)
Published 2/24/2020 in GHL (International)
Dear customer, dear customer, we would like to inform you about the current delivery situation. Although GHL...read more ❯
Tank Of The Month - TOTM February 2020
Published 2/12/2020 in GHL (International)
TOTM_02_20, Aquarium from Anthony Pham
My name is Anthony, and I have lived in California since 1979, but I am originally from Vietnam. My passion for reef life began read more ❯
Tank Of The Month - TOTM January 2020
Published 1/17/2020 in GHL (International)
TOTM_01_20, Aquarium from Ole Ovesen
My name is Ole Ovesen, and I Iive near Aalberg, in northern Denmark. My interest in aquariums started at an early age. As a young boy, I had read more ❯
Tank Of The Month - TOTM December 2019
Published 12/17/2019 in GHL (International)
Beitragsbild TOTM December19, Janne Koskinen
My name is Janne Koskinen and I’m from Tampere Finland. I got my first tank a 60 liter (15 gallon) freshwater tank 42 years ago. The hobby was a lot read more ❯
ION DIRECTOR - Automated Ca, Mg, K, Na and NO3 testing made easy! (version for US customers)
Published 12/5/2019 in GHL (International)
Achieve the next level of water testing automation with the ION Director (IOND). Through the use of ion-selective technology, the IOND automatically measures and controls Calcium, Magnesium, Potassium, Sodium and Nitrate levels in saltwater aquariums. Get a deeper understanding of your aquarium with the IOND. The ION Director can be used alone or...read more ❯
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