88-15: New Application Technology For Controlling Algal Fouling inThis paper presents laboratory and field data that describes the very successful application of a new microbiocide for control and removal of persistent and heavy algal growths. Algae control was achieved with the use of Microbiocide H 640 as a supplement to an ongoing oxidizing microbiocide program. This unique product resulted in lower overall dosages of microbiocide with more effectiveness and longer lasting results.