The Cavity stones are the ideal hiding places and breeding caves for l-numbers. The eggs are laid in the Cavity stones and the young L-numbers are raised in the holes. The eggs are often guarded by the male until they hatch.
The Cavity stones are handmade from ceramics and are 100% safe for humans, animals and nature. The color of the Cavity stones is ingrained in the clay so that the color will not disappear like with painted aquarium products. Because of the natural appearance of the Cavity stones they look a bit like rocks / stones with holes so they can be used well in show aquariums and breeding racks.