Canvas Fish Pond Above Ground Fish Tank 1700 L Round Koi Pond (Blue)High Quality Materials: Made from 0. 9 mm thickened PVC scraper cloth, this canvas fish pond is corrosion resistant, sun resistant, wear resistant, scratch resistant, and secure. The seamless stitching ensures waterproof performance without leaks, ensuring secure use. Sturdy Structure: The above ground fish pond features sturdy and stable PVC pipes that are corrosion resistant. Its strong, stable frame ensures that it remains intact and holds its