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
ION DIRECTOR - Automated Ca, Mg, K, Na and NO3 testing made easy! (non US version)
Published 12/4/2019 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 ❯
Cyberweek 2019
Published 11/28/2019 in GHL (International)
Buy now the aquarium controller with the highest safety and quality...read more ❯
Tank Of The Month - TOTM November 2019
Published 11/23/2019 in GHL (International)
Beitragsbild TOTM November19, Michael Shur
My name is Michael Shur and I’m from Brooklyn, NY. I have been in this hobby for about nineteen years now. During this time I have had both good and bad experiences as we all have. In 2007 I decided to upgrade my 120 Gallon to a larger 180 Gallon Oceanic with new automated system.read more ❯
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 ❯
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 ❯