Improve your water quality with environmentally safe Algae Block™. 40 blocks per container.
Algae Block Round™ (40)
40 blocks per container. Packed with naturally occurring food grade Bacilli bacteria that starve toxic algae blooms of sustenance and energy, bringing your water back into balance. Environmentally safe. Pet and livestock safe. Not harmful to children. Improve your water quality with Algae Block™.