A repair shop for farm machinery in the Münsterland.

OASE began in 1949 in Hörstel, a small town in the north of North Rhine-Westphalia, as a repair workshop for agricultural machinery. German Wikipedia gives its first name as August Wübker Söhne OHG, a family partnership, and says the business developed its own pumps for farm use in the early 1960s.

The turn towards water came in 1966, when, according to German Wikipedia, the company began making fountain and submersible pumps. That is the root of the brand people know now: pumps, filters and lighting for garden ponds and water features, and the larger fountain installations that the company handles for public spaces. German Wikipedia says branches followed in Belgium, the Netherlands, France, the United Kingdom and the United States in the 1990s, and a Singapore office in 2000 took the business into Asia.

The Wübker family did not keep the company. Its proprietor, Josef Wübker, sold it to the private-equity firm Cognetas; the law firm Clifford Chance, which advised Cognetas, said in June 2011 that Cognetas had bought the then family-owned OASE in 2002, while German Wikipedia and the trade magazine PET worldwide, in 2023, give 2003. Clifford Chance said Cognetas had expanded the business abroad, particularly in Asia, Eastern Europe and the Middle East.

Hörstel has stayed the headquarters through every change of owner. Clifford Chance named the town in its 2011 announcement, and PET worldwide did again in 2023, when it described OASE as a specialist in the creation and care of water worlds in private and public settings — the company’s own phrase.

Ponds, fountains and, later, aquariums.

OASE’s business divides, in the company’s own account reported by PET worldwide in 2023, into a consumer side — water and garden products and aquariums — and a professional side covering fountain technology and lake management. German Wikipedia describes the consumer range as small water features, garden and swimming ponds, koi ponds, pumps, filters, lighting and garden control systems, and the professional side as water construction and fountain technology for larger public attractions; it cites a multimedia fountain show in Bucharest and a water curtain in Suzhou, China, both from 2019, and a separate water-technology business, Lake Therapy, which treats lakes and biotopes. In 2009, German Wikipedia says, the company opened the OASE Innovation Center in Hörstel for product training and seminars.

Aquariums came late. In January 2016 Reef Builders reported that OASE had bought Reef One, the UK aquarium maker founded in 1998 by Paul Stevenson and his son Matt, best known for its biOrb aquariums. Stevenson was retiring and said OASE was “the perfect fit to take the business to the next level”; OASE’s chief executive at the time, Ansgar Paul, said biOrb would be “the perfect complement to our own OASE indoor aquatics products,” which Practical Fishkeeping reported were due to reach the market soon. Reef Builders described the buyer then as a specialist in water gardens, indoor aquatics, fountains and lake management. German Wikipedia lists biOrb alongside OASE as the group’s two brands.

The aquarium range has since grown its own lines. At Interzoo 2022 in Nuremberg, the Italian reef blog DaniReef reported, OASE showed a HighLine 600 aquarium in anthracite and new ScaperLine aquariums in black or grey, with a white finish previewed, together with a ScaperLine range of plant fertilisers.

OASE grew in the garden and fountain trade by buying other companies, according to German Wikipedia: Eden S.r.l. in Italy in 2013, Geo Global Partners in the United States in 2014, Atlantic Water Gardens in the United States in 2018, Söll GmbH of Hof in Bavaria in 2019, and the Australian business Aquatec in May 2023. PET worldwide also names Eden, biOrb and Söll among its purchases.

The aquarium trade and its makers.

The seven brands in this group are all aquarium and pond names: Fluval, Juwel, Seachem, Hikari, OASE, EHEIM and API. Aquarium and pond brands in general sit at many different points in the trade, from family firms that still carry a founder’s name to labels that now belong to much larger pet care groups, and a single brand can be sold everywhere from a specialist aquatics shop to a general pet store.

An aquarium brand’s identity is usually carried less by a single product than by a name, a logo and the look of its packs, because the company behind the name may have changed hands, moved its production or grown far beyond the place where it started. That makes the questions behind each name worth asking plainly: who started it, who owns it now, and where its tanks, filters, foods or treatments are actually made.

Each guide separates what independent sources record from what the company says about itself — its founding story, its owners over time, where its products are made and how its packaging has changed — and marks plainly what rests only on the company’s own word.

Three investors, one town.

Private equity has owned OASE since Cognetas bought it. In June 2011 Cognetas sold OASE Holding GmbH to Barclays Private Equity, Clifford Chance announced, without disclosing the price; PET worldwide, writing in 2023, records the 2011 majority buyer as Equistone. In 2017, the same magazine reported, the majority passed to Argand Partners, an American private-equity firm.

The management has changed with the owners. Ansgar Paul led the group at the time of the biOrb purchase in 2016; PET worldwide named Thorsten Muck as chief executive in 2023; and German Wikipedia, citing the group accounts for the year to September 2024 filed in the German company register, names Cornelius Everke as chief executive. The parent company is OASE Living Water GmbH of Hörstel.

German Wikipedia lists production in Germany, Italy, the United Kingdom, the Netherlands, the United States and China, and PET worldwide gave the same six countries in 2023.

For a design guide, OASE shows how an engineering brand built on garden ponds can stretch into living-room furniture without changing its name, and how a bought-in brand such as biOrb can be kept separate beside it. Compare EHEIM, the family-run aquarium-filter maker near Stuttgart, and Juwel, another German aquarium name. For this guide we use deep water blue, a pale shallows tint and reed green with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep OASE’s identity on hand — save it to a board in the Made Good inspiration library.