[whale]

lumber....

My tank had the same PVC pipe under it. It appeared to be there to allow water to pass from the forward bilge to the rear under the tank due to the foam all around the tank that could have obstructed the flow otherwise. The ends on mine were all rotten (if that's the right word for deteriorated PVC). I suspect it had something to do with the gas leak. I wonder if gas dissolves PVC over time?? I do not plan to reinstall a PVC pipe since my new tank will not be foamed. As long as the flow is not obstructed by the tank I see no reason for the PVC.