Kelsey Cummings wrote:

Is there anyway to remove scratches from the inside
of a tank while there is water in it or is it a drain (and completely
empty) so you can buff the scratches out proposition.

There's a product used in aviation to remove scratches from acrylic windshields
called "MicroMesh." It contains several different grades of abrasive cloth. The
usual use is to polish with a medium grit or coarser until the scratches are out
and then work through the finer grits until you're really just polishing the
acrylic. It's rather labor-intensive.

George Patterson
Forgive your enemies. But always remember who they are.