Real aragonitic base rock, not cement, no curing. Extensive macro and micro-porosity infused with spored bacteria for outstanding biological performance. Clean and safe for all fish and inverts, environmentally responsible each piece being very unique. Part #: 00376 for a 40 lb box, and #25376 for a 20 lb box.
- Package Sizes: 20 and 40 pound boxes
- Use: Marine and Reef Aquariums