CaribSea Life Rock Belize (20Lb) - Don’t just put rocks in your tank, ROCK YOUR REEF with LifeRock Belize Branch! Spectacular branches make a reef tank go from nice to WOW! LifeRock Belize Branch fills an aquarium, but leaves open more area for fish and inverts to display. Amazing porosity, incredible biological performance (drops ammonia like real live rock), and unsurpassed realism make LifeRock the best and most cost effective rock choice for any aquarist