Clear Pond Sludge Buster Blocks - Pack of 90 1-Ounce Blocks
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<b>[Product Information]</b><br>
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<li>Eliminates bottom sludge such as decaying plants, grass clippings, leaves, fish waste and other organic waste material</li>
<li>Treats 1/2 acre</li>
<li>Controls odors by eliminating the build-up of dead and decaying organic wastes</li>
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