Product details:

Spacious interior encourages exploration while providing secure breeding niches Eco-friendly, and won't displace or reduce the amount of water in your aquarium Molded with care and hand-glazed to eye-catching, natural look perfection These Eco-Friendly, man-made Cichlid Stones are molded with care and hand-glazed to eye-catching, natural look perfection, then heated to more than 2100 degrees and forged into high-fired ceramic. Each piece is individually poured for consistency, and no two are exactly alike. Each finely crafted piece is man-made, and because they're hollow, they won't displace or reduce the amount of water in your aquarium. That means healthier and happier first. Excellent shelter for all aquarium fish including African Cichlids, New World Cichlids, plecostomus, corydoras, loaches, freshwater sharks, as well as nocturnal or cave-dwelling fish species. The spacious interior encourages exploration, while providing secure breeding niches and a defensible refuge, which helps reduce stress. The Cichlid Stone 10 piece "Big Rock Boxcomes with six large stones of three different versions and four medium stones of two different versions.