All fish need calcium, iron and phosphorus to live, reproduce and grow. But like the old saying goes, "too much of anything is not good. suggests that iron and phosphorus levels that are too high can be harmful to your fish.

Excessive amounts of iron in an Aquarium of any type will cause flakes to form in the gills, causing respiratory issues or worse. In tanks with too high levels of phosphates, the water quality starts to degrade quickly. lessening the amount of dissolved oxygen available for your fish.

Adding Limestone will provide a steady supply of calcium for your tank dwellers and, at the same time, remove any excess iron and lower the phosphate level of the water. For the eggs your fish haven't laid yet, they will reap the benefits of Limestone Rock before they even hatch, which will absolutely contribute to their success in combination with other health measures you routinely use for your Cichlids.

The Limestone Rock we offer is Genuine Texas Holey Rock. You might call it Honeycomb Limestone or Limestone Holey Rock. More important than what to call it is what the calcium content of the rock you purchase has. When you buy from us, you are going to notice the positive effects the Limestone has on your Aquarium.