Caribsea LifeRock Donuts 4pcs

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.LifeRock Donuts are perfect for instant swim through spaces or large coral seats. Diameter is approximately 8 inches and a depth of 2 to 3 inches. Not a drilled hole, LifeRock Donuts look natural and pretty. Box contains 4 Donuts. Please Note: Because of the fragile nature of this rock, it is possible for the rock to break during transport. We do our best to package…