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Ebi-Ken Kou-Yang is a calcium bentonite based mineral rock that has a very high composition of calcium which invertebrates use to help with molting and aid in the development of thicker, denser shells, and shinier whites. Kou-yang also acts as an area for shrimp and invertebrates to pick on for supplementary minerals.
Directions: Use 10 grams of Ebi-Ken Kou-yang for every 10-20 gallons of water. For the best results, use a tooth brush to brush off the algae that grows on the surface of the Kou-yang mineral rocks every once in a while to allow shrimp to graze on the rocks and to facilitate the release of trace minerals into the water column.