Why our Mineral Mud? This mud is ALIVE! It is high in minerals and trace minerals essential for feeding sea grasses and macro algae.  It contains beneficial cycling bacteria and at times, helpful worms, starfish, and other tiny inverts.  Wonderful for seeding new tanks, refugiums, or just boosting your current system. For example, 3-4 cups will seed a 55 gallon tank. Why pay more for less?