SpongeBob SquarePants Pineapple House, Squidward's Island House, and the Krusty Krab. Comes together. Your aquarium immediately presents a colorful marine world. The decorations are made of reliable resin. Rinse them with clean water before placing them in the aquarium. If you are worried about the water quality being affected, you can soak them in water for a day. The colors will not peel or fade even after prolonged use in fresh and salt water. Pineapple House 9 x 8 x 12.5 cm, Squidward's Island House 8.5 x 8.5 x 14.5 cm and Krusty Krab 9.5 x 6 x 8.5 cm, Suitable for medium and large aquariums. Our aquarium decorations have a flat bottom and can be placed anywhere. There are no sharp ridges on the edge and will not damage the fins, it is a place for fish to play. A great decoration for SpongeBob SquarePants world fans. Whether for children or friends, this is a great gift.