Drain King

Drain King / Genie Jet is great for unblocking pipes or finding leaks in swimming pool pipes. 

Simply connects to a garden hose. It expands to create a seal around the pipe, then forces out the blockage. Suits standard pool pipe 1.5" - 3"

Note:  A hose adapter maybe required to fit your hose to the Drain King, depending on the hose type.