Can you convert a fiberglass pool in to a concrete one?

Yes, it is possible to convert a fiberglass pool into a concrete one, but the process is complex and typically involves significant renovations. You would need to remove the existing fiberglass shell and prepare the site for the new concrete structure, which includes excavation and installation of Plumbing and electrical systems. It's advisable to consult with a professional pool contractor to ensure the project is executed correctly and meets local building codes.