Texas Holey Rock 20 lb.

This 20 pound group of Holey Rocks will add beauty and activity for the fish in your tank. Not to mention, these are all natural rocks that are full of calcium. When you put Holey Rocks in your aquarium, it's like giving your fish vitamins!
Keep in mind, Holey Rocks also raise the pH level of your water, making them a good fit if your fish require an elevated pH level, such as a Cichlid Fish do>