Freshwater Aquarium Plants :) February 8, 2020 by theplecofeeder y of these benefits. They are made from plastic. However, they are an option if you want a maintenance free method of decorating your fish tank. Related posts: 10 Best Goldfish Tanks :) 10 Best Office Fish Tanks :) All About Aquarium Grass :) Best Fish For A 10 Gallon Tank :)