The Varipump 20,000 from Evolution Aqua is an external pond pump, suitable for large ponds, that is fully controllable. The units are fitted with quiet, reliable motors where the output and energy consumption are controlled at the push of a button.
Varipumps can be used inside and outside of ponds and are powerful enough to cope with demanding situations on large ponds and filtration systems.
Complete with hosetail fittings.

Specs
Power - Max watts 190w
Max Flow - 20,000 l/ph (approx 4,400 gallons)
Max Head - 5.5 m
Inlet - 2"
Outlet - 2"
Cable Length - 2m (plug to control box), 10m (control box to pump).