‘Ozone nanobubbler’ intended to break up aquatic plant infestations is relatively new technology that has only previously been trialed in public waterways, according to a report Sign up for the daily Inside Washington email for exclusive US coverage and analysis sent to your inbox Get our free Inside Washington email Get our free Inside Washington email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice The device used to