https://www.theguardian.com/us-news/2026/jun/16/algae-trump-lincoln-memorial-reflecting-pool
Long live the Supreme Leader, long live the Revolutionary Guards

https://www.theguardian.com/us-news/2026/jun/16/algae-trump-lincoln-memorial-reflecting-pool
Long live the Supreme Leader, long live the Revolutionary Guards

Either you fill it to the fill line in which case the water flows off. Or you fill it to the brim.
Maybe? Only if the surface is sloped to the sides and otherwise perfectly flat. And this is a vast surface to have the resin set like that, if such a thing is even possible without some shaping and polishing after it cures.
Only one way to find out!