Attention! Check Dimensions of the decoration before purchasing. Plecoceramics Pleco Cave Natural is made of clay firing at high temperature. This makes our ornament absolutely safe for people, aquarium fish and pets. The Pleco Cave fish house can be used for reduction agression among fish. Fish tank decoration looks very natural inside tank. Just flush the tube in running water before use. Can be used for most of fish and shrimps species. Specifications: Material: Ceramic Dimension: 5,3*1,97*1,97 inch. weight: 0,39lb Fish tank size: recommended for 15-50gal tanks Customer service: when you receive your package, if find any damaged or defected item, please feel free to contact us at the first time, we can resend you a new replacement.