Reflecting Pool Turns Green After Missing ‘Nanobubbler’ Machines Ahead of Trump UFC Event

The Reflecting Pool near the White House displayed an unexpected green hue. The discoloration was linked to the removal of large “nanobubbler” devices. Those machines normally aerate the water to keep it clear. They were taken away in the days before a promotional event. The event was organized for President Trump’s Ultimate Fighting Championship birthday celebration. Officials said the timing was intended to accommodate the party preparations. Critics argue the hurried removal contributed to the pool’s green appearance. The incident highlights logistical challenges when high‑profile events intersect with historic sites.