I've been fighting a suction leak that our pool inspector managed to miss since we got our house about a month ago. After trying to troubleshoot it myself and having a service guy out to troubleshoot and replace the above ground plumbing, the problem persists. I've got a leak detection company coming out next Thursday to take the troubleshooting to the next level and am hopeful that we can find a resolution. The skimmer is old, possibly 20+ years and the plumbing likely of the same age. I'm just curious about ballpark costs for repairing or replacing in-ground plumbing. Has anyone been through this?