CaribSea LifeRock 20lb but screened to reduce fines

but screened to reduce fines and packaged for retail

you may perform a second six-day course of treatment

Another plus is that Easy Masstick stays “stuck” for hours

Extra strong and durable magnet system

Compact Footprint

CaribSea LifeRock 20lb but screened to reduce finesReal 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 minimize damages. Rock is not insurable