Features:-Made of envronmentally friendly material resin,do not affect the PH in the tank.-Helps creat a true underwater world for the fish with the water swaying.-Designed with a weighted ceramic base, so they can stand firmly in the tank.-They are absolutely safe for fish, they won't be hurt, rot or cause any algae problems.-Without any requirement of lighting and carbon dioxide.Specification:Color: Green, Purple, Orange, PinkMaterial: PVC plastic+CeramicSize: Height 30cm, 25cm, 20cm, 5cmWeight: about 400gPackage include:15 X Aquarium Plant DecorationsWarm Tip:Do not expose to high temperature or place in a fish tank above 65 ℃.