
LINN Gerätebau manufactures aeration, oxygen and water technology for fish farming and aquaculture made of stainless steel.
LINN Gerätebau GmbH
Sauerland, GermanyNew on Amplifa
Aquaculture technology from the Sauerland
LINN Gerätebau is a manufacturer of technology for fish farming and aquaculture based in the Sauerland region of South Westphalia. The family-owned company has been supplying fish farms throughout Europe for over 50 years and is regarded as the European market leader in water oxygen enrichment; customers in more than 75 countries are supplied from its own production site. The product basis originated from the family's own trout farm, which the Linn family has operated since 1929. The portfolio comprises over 1,100 products, including floating aerators such as Aqua-Maxi, Aqua-Hobby, Aqua-Pilz, Aqua-Jet and Aqua-Wheel, paddle wheels, fish nets, water treatment, analytics and smart monitoring solutions for controlling oxygen and temperature via app. The devices are predominantly made of corrosion-resistant stainless steel, designed for continuous operation and used in aquaculture, pond farming and fish transport.
- Site
- Sauerland
- Processes
- Aeration technology for fish farming and aquaculture, Oxygen enrichment of water, Water circulation, Smart monitoring (O₂ and temperature control via app), Accessories for fish farming (nets, water treatment, analytics)
- Materials
- Stainless steel
- Founded
- 1929
- Industries
- Aquaculture, Fish farming, Pond farming
- 01
In-house development based on the company's own trout farming experience
- 02
Manufacturing at the production site in the Sauerland
- 03
Assembly and inspection
- 04
Sales and shipping to over 75 countries
Materials and construction
Stainless steel
Used for robust, corrosion-resistant constructions such as aerator motors and net frames that withstand years of operation in water.
Production site

Sauerland
DEProduction site
- Materials
- Stainless steel
Products for fish farming





Inside the production

Industries
Additional services
At home in fish farming since 1929
- 1929
Start of operations of the family's own trout farm by the Linn family
- 1970er
Launch of device manufacturing; for over 50 years LINN Gerätebau has been supplying fish farms throughout Europe