Unlike living, artificial aquarium don ' for t get bigger, they stay beautiful, and you don ' for t need for time to care for Classic green, bring more aquarium landscape The softness will not scratch the fish, the will wiggle with the real water and can be grown in both for and sea water Note: water may be squeezed and deformed during packaging and can be recovered by placing in 104-140 ° F warm water Aquarium seaweed, PVC, ceramic base, will not pollute the water, will not fade