By the end of the 1830s, exports of whale products (southern right or humpback whales) were at a peak, the station taking about 300 southern right whales on the first season, as was the resident European population. Anticipating British annexation the Wellers started buying land and settling it. But a sudden decline in whales saw Edward's exit at the end of 1840 followed by the firm’s bankruptcy. He and George lived out their lives in New South Wales. The management of Otakou whaling operations was taken over in 1840 by Charles Schultze (1818–1879), who had married the Weller brothers' sister Ann Weller, and an employee, Octavius Harwood (1816–1900).
