- An 'ozone nanobubbler' device, costing $1.7 million and designed to clear algae, was used for the first time in a pool at the Lincoln Memorial Reflecting Pool, having previously only been trialled in public waterways.
- The technology, which blasts algae with microscopic oxygen bubbles, is only five years old and was deployed to meet a tight deadline for Fourth of July celebrations following a refurbishment.
- Temporary nanobubblers were initially installed, but their brief removal and reported malfunctions, combined with warm weather, led to a significant algae bloom in the Reflecting Pool.
- The permanent nanobubbler was subsequently installed, with its manufacturer, Greenwater Services, asserting that their part in the project went according to plan despite the controversy.
- The Department of the Interior defended the no-bid contracts awarded for the project, while Trump blamed the algae outbreak on 'criminally-made' sabotage, leading to arrests.
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