1) Fiberglass tubs are notorious for getting hairline cracks that usually open up when someone is standing in it with the water running.
2) Also it might be a leak from upstream (plumbing behind the w ... read more
In Georgia a wall retaining over 48" grade requires an engineers stamp.
You might consider terracing and have two or more lower retaining walls. Be aware of hydrostatic pressure and provide adequate w ... read more