This is some of the most beautiful rock we've seen. Super premium quality. It is lighter and more porous than other rock meaning you will be more surface area for nitrification and more interesting shapes. Because it is lighter a full box is approximately 40 pounds put fills up a standard 50 pound box of ordinary rock.This rock is cured and ready to become a centerpiece of your aquarium display.Once you receive your rock, you must re-cure the rock for at least a week. During shipping some of the beneficial bacteria will die off. Do not add this directly to an existing tank!
