Aquarium seaweed plastic, made of environmentally friendly PVC material, ceramic base, will not pollute the water, will not fade The softness will not scratch the fish, the will wiggle with the real water and can be grown in both for and sea water Unlike living, artificial aquarium don'for t get bigger, they stay beautiful, and you don'for t need for time to care for them Plastic water may be squeezed and deformed during packaging and can be recovered by placing them in 104-140 ° F warm water To ensure aquatic plants stand upright in the aquarium, please maintain a water level above 14 inches and bury the base in gravel Avoid placing plants near the aquarium's air outlet