CaribSea LifeRock Arches 20lb Not just a box of

Not just a box of LEDs—the AP9 compliments the natural beauty of a well-maintained aquarium

Many nitrite test kits suffer from interference caused by amines e

so their surface area is too small to support the number of bacteria needed to properly filter the aquarium

gracilaria

and organic material

CaribSea LifeRock Arches 20lb Not just a box ofEach Arch is approximately 12" long. 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. 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 the rock sufficiently to