MIRACLE MUD, Marine 5 lb. by EcoSystem Aquarium. Miracle Mud is a product of EcoSystem Aquarium® that has been carefully formulated to include all the essential trace elements, minerals, and components necessary to maintain a successful aquarium. Miracle Mud will continually replenish your aquarium's concentration of trace elements and minerals to create an ideal environment. Miracle Mud also contains anaerobic microorganisms that denitrify the aquarium leading to a pristine home for your fishes and corals. Further proven benefits from the usage of Miracle Mud include: - Reversal of head and lateral line erosion (HLLE) in fishes. - Restoration and maintenance of fish and coral's health and vibrant colors. - Compatibility in various types of aquariums (fish-only tanks, coral-only tanks, or small polyped stony (SPS) reef tanks) - Natural denitrifier.