Algatec® is a strong, highly effective dual-action algaecide that quickly kills all types of green algae. The product also eradicates yellow algae and black types (i.e algae, bacteria,& fungi biomass). AIgatec® has a powerful interaction with chlorine based sanitizers which helps to enhance algae cleanup and removal. However, this product does not require or use chi orne to kill algae. Algatec® quickly combats algae growths and prevents new growth due to its biostatic inhibitor function. And Algatec® leaves pool water sparkling clear due to its powerful clarifing action