1.Because it's a brand new product that uses pigment coloring and is shipped sealed in small boxes. So there will be a slight smell. Thanks for your understanding. After washing and ventilating with warm water, the smell will disappear in a short time. 2.The roots of the artificial aquarium plants are detachable, easy to disassemble for easy cleaning, they can be used multiple times and prolong the service life. 3.The plants for fish tank decorations will decorate your aquarium all the time with minimum maintenance. 4.The plastic plants for fish are made of soft and healthy material, no harm to water and fish. It is ideal for both fresh and salt water, do not affect the PH in the tank. With different styles and sizes, you can decorate you fish tank according to your creativity.