Söll GmbH was founded in 1994 in Hof (Bavaria) by chemist and managing director Thomas Willuweit. The company is a global specialist for the natural care of garden ponds and aquariums and a specialist in water treatment. In its core business, Söll develops and produces environmentally friendly products for garden ponds and aquariums. The company also deal with water analysis and filter technology. Söll sells ornamental fish feed from sustainable fishing with the MSC eco-label under the "Organix®" brand. Söll is both ISO 9001: 2008 and environmentally certified according to ISO 14001: 2015. The company invests a lot of time and work at a high level in research and development. Söll innovations are protected by a large number of patents and property rights.