Serenity Green Water Destroyer Block Pond Strength 20g

The Serenity Green Water Destroyer Block for Ponds effectively controls most algae common to freshwater aquariums and ornamental fish ponds. The product kills growing algae and prevents algae from recurring. The flocculent in the block will then bind any floating dead algae or suspended particles causing them to sink to the bottom, where they can be siphoned of with ease or broken down by naturally occurring bacteria.