Pump recomendation

HI
I need a pump that can pump water from my small pond (about 100gal) over a
distance or approx 5 metres to a UV clarifyer. The pond is a garden feature
pond built raised above the ground (about 2ft high) the pump will be
situated about 5 metres away at ground level and the hose will be routed to
the pond from the pump at ground level and then up and over the small 2ft
wall into the pond.

The UV clarifyer which will be situated neat the pump requires a flow rate
up to a max of 250gal per hour.

Can anyone recommend a suitable pump to pump water reliably over this
distance (5 metres) with a flow rate not to exceed the UV max rate of 250gal
per hour?

Hope this all makes sense.