I reported previously (19th Jan) on Israel’s BlueGreen Water Technologies and its environment friendly Lake Guard treatment for toxic algae.  Lake Guard was just used to treat Chippewa Lake in Ohio. Blue Green says it killed all the toxic algae in the lake within just one day.

https://www.news5cleveland.com/news/local-news/oh-medina/chippewa-lake-becomes-first-testing-site-of-new-algae-bloom-technology-produced-by-israeli-company