Aqua One Algae Block 20G

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Aqua One Algae Block 20G Aqua one algae blocks when placed in your aquarium will slowly dissolve over 7 to 14 days depending on water conditions and circluation and are designed to break down and prevent algae problems within aquariums and ponds, leaving your water crystal clear. Key Features: Assists with the prevention of algae growth in tanks Easy to use One whole block treats a large area of 120L Show more