. Algae Klear Xtra What Is Algae Klear Xtra? Algae Klear Xtra is a fast-acting algae killer that is designed to kill submerged algae and submerged blanket weed. This unique product works at any temperature to either clear ponds of an existing algae problem, or to prevent any new algal growth due to its unique UV filter. If you have blanket weed floating on the surface of your pond, use Blanketweed Klear. How Does Algae Klear Xtra Work? Unlike some other algae killers that only reduce the algaes food source, Algae Klear Xtra targets the algae directly to kill it quickly and effectively. Algae Klear Xtra also contains a unique UV light filter that helps to slow the growth of algae and prevent any regrowth. This UV filter is not a dye, despite the colour of the liquid and will therefore not alter the colour of your pond water.
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