Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.AllNewsSportCultureLifestyleAn '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. In fullDevice installed to help keep Trump’s Reflecting Pool clear of algae was never used on a pool: reportThank you for registeringPlease refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in