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If you want to prevent algae growth in your water reservoir, the Aquarium Algae 20g Block is made for you. The Algae block has been made with the ingredient diuron to work as a preventative of algae growth within your water. est used in conjunction with a 24/7 pump to allow for water circulation of the diuron to ensure it effectively blocks algae growth. The Algae block is harmless to plants and wildlife if dosage is adhered.
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