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