Hi,
Don't owrry, you can you standard garden hose as long as you keep the hose the same all the way from the pump to the pole, the connector on the pole will be a hozelock size and the small pipe leading up the pole is purely for weight and convenience.
You will only encounter problems if you have different size hoses along the way.
i.e. hozelock - microbore - hozelock as this will build up pressure and effect your varistream.
best wishes,
Trev