How do I turn a disused outdoor inground spa into a sandpit?

Question

How do I turn a disused outdoor inground spa into a sandpit?

Answer 1

drill ,holes in the floor and area that is at lowest point.

put in pea gravel and top off with sand.

sand comes in various particle size.

choose the top layer about one foot to be of the finer particle size.

the holes will allow the spa to drain and the sand will dry out.

Answer 2

you don't