Newly renovated $14.8-million, American-flag blue Reflecting Pool quickly turns chartreuse with algae, complicating Trump’s bid to showcase a pristine monument ahead of the nation’s 250th anniversary.

The Reflecting Pool at the Lincoln Memorial turned green with algae just days after crews completed a $14.2 million project — ordered by President Trump — that coated its floor with dark blue waterpro...

A spokesperson ⁠for the Interior Department said the pool is being treated with "high-tech nanobubble ​ozone technology" that kills algae, pathogens including E. coli, and other contaminants.