Limestone Holey Rock

40 lbs. of genuine Texas Holey Rock. The biggest piece is right at 16" wide (side to side) x 13" in height and between 4 and 5" thick. The rock on the left measures 10" wide x 8" high x 3-4" thick. These are going to look nice in any tank they go in, but the width of the largest one makes them perfect for a 30 or 40-gallon breeder tank. 
They both have big swim-through holes that cichlids cannot seem to get enough of. In addition to the swimming activity they provide, these rocks have a high calcium content, and by putting them in your aquarium, you are providing your fish with a constant supply of calcium, which will result in healthier fish.
These rocks have been thoroughly cleaned, and they are ready to use right out of the box when they arrive. 
Holey rocks will raise the pH level of the water in a fish tank and are a good choice for any aquatic setup that needs an elevated pH level, like an African cichlid tank.