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
Tank Of The Month - TOTM October 2019
Published 10/15/2019 in GHL (International)
Beitragsbild TOTM Oktober19, Martin Grob
Hello, my name is Martin Grob and I am from Zurich, Switzerland. I started out in the reef aquarium hobby about five years ago. When I first started, I had a 500 liter/130 gallon off the shelf display which I ran for about four years before upgrading to my current custom 1900 liter/500 gallon display a little over a year ago.read more ❯
ION DIRECTOR - Automated Ca, Mg, K, Na and NO3 testing made easy!
Published 9/30/2019 in GHL (International)
ION Director + GHL Doser Set black
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 ❯
Aquatic Season Start 2019 Special Offer - all Mitras LX7 on sale for a short while only
Published 9/21/2019 in GHL (International)
Start of Aquatics Season 2019 No more compromises - Your tank deserves the best illumination! Only for a short time: Special Offer LED-fixture Mitras LX7 Models with 4 clusters: Only 395€ instead of 471€ Models with 6 clusters: Only 647€ instead of 731€ (recommended retail price Germany net, without VAT and shipping, offer only valid for...read more ❯
Reef A Palooza Chicago October 2019
Published 8/26/2019 in GHL (International)
GHL at #reefapaloozachicago, booth #117
World premiere: See the new ION Director live in action! Fully automatic measuring of Ca, Mg, K, Na and NO3 without reagents. See you at booth...read more ❯
The new high-power LED aquarium luminaire Mitras LX 7X04
Published 5/21/2019 in GHL (International)
Mitras LX series with 4 clusters GHL is proud to announce new models of the Mitras LX series of high-end LED aquarium lights developed and produced in Germany: LX 7204 for seawater LX 7004...read more ❯
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