Our fish accessories are made of 100% natural resin material, ceramic base, no heavy metal, and will not affect the water quality. These accessories are easy to clean because when cleaning the aquarium, just use a soft brush to remove the attachments, and then rinse with clean water. It includes 1 pc. of Tree Trunk with Moss (6inches length, 3.9 inches width, and 3.54 inches height), 1 pc. of Hollow Bucket(3.54 inches length, 1.9 inches width, and 1.9 inches height), and 6 pcs. of Artificial Aquatic Plants(4.5 inches tall). Our fish accessories are safe and cute, making it perfect for your aquarium.