A comment on a blog I read sparked a thought in mine head.

Somewhere I once ran across a comment about a gal's dad
building her an underwater grid. She wanted a water feature
in her frontyard, no fence, and this was the solution they came
up with for safety and city regulations.
Also read about a Hollywood starlet, with children, who had an
underwater grid in her koi pond.
The regular ponder's Dad, as I recall, made it out of rebar?
What do you all think?
Just lash it together with wire? Welding? What is in that
welding stuff?

My concerns -
would it rust?
would it harm fish?
if it did what could you put in that would not?
Something out of plastic, with rounded edges?

k :-)
(avoiding the Thanksgiving debris and the fact that Christmas
is 25 shopping days away...........)