We suggest you consult with a pool installation company or have a plumber come out to your house with a jetting machine. Depending on the number of turns in the pipe, the plumber should be able to
You may also be able to use high pressure air to force the blockage out of the pipe. Or you could use a blow bag and high pressure water. A blow bag attaches to the end of a hose and expands in the pipe then water pressure fills the pipe and forces the blockage out the open end at the opposite side.
Talk to both the plumbing company and the pool people first.
