Effectively controls "green water", algal blooms, String or Hair algae and Blanket weed in ponds, water gardens and ornamental fountains while keeping water clean and clear.
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Algaecide in block form, that slowly dissolves to help combat pest algae in ponds.
Pond Algae Block is best used as a preventative, or when algae first appears, or after cleaning an algae infested pond.
To control algae, add one square piece of a block per 200L of pond water or one complete block per 800L of water.
This block is best used as a preventative or when algae first appears or after cleaning an algae infested pond. Blocks will dissolve over 7-14 days, depending on water conditions and circulation. If possible, control the amount of sunlight or artificial light to reduce the growth of algae. Repeat only when algae reappears. To prevent oxygen depletion, remove heavy algae growth mechanically before treatment and aerate the water after use.