High quality materials: the products are made from environmentally friendly resins. The safe, non-toxic and non-contaminated decoration of the Castle - aquarium will not harm aquatic animals or have any adverse effect on water quality. Suitable for all large and medium-sized freshwater and saltwater aquariums. Product features: the Resin Castle Aquarium's unique structure, bright color description and picture realistic make the decoration beautiful and generous. And it looks more bright and colorful underwater. Fish can swim in the castles, move back and forth, provide shelter, hiding place, entertainment place for fish, which will become the unique landscape of the house. Specification size: castle driftwood resin approximate size: 9.1 inches long x 3.6 inches wide x 10 inches high, approximate weight: 1.3 LB. Castle won't fade over time, they're absolutely safe for fish, and most importantly, they won't die, rot or cause any algae problems. Application: Castle is designed with a double flat base and can be placed in any ornament in the aquarium. Suitable for many types of small animals, such as molly fry, malachites, shrimps and snappers. It adds mystery to your aquarium and provides you with a fun place for fish to breed, play and feed. After-Sales Service: If you are not satisfied or do not like our products, please contact us and we will give you a replacement or a full refund. Do not hesitate to buy!