Canvas Fish Pond, 1781.3L Above Ground Fish Pond, PVC Koi Tank with Clear Viewing Panel, Rectangular Goldfish Tank with Stainless Steel Frame & Drain Valve, for Breeding Koi, Irrigation(Black)Product Features High Quality Materials Made with reinforced 0. 9 mm triple layer PVC scraper cloth and 1. 2 mm high transparency PVC, this canvas fish pond is durable, sun resistant, and tear resistant. It offers clear visibility and is wear resistant and scratch resistant, with a seamless design to avoid leaks. Sturdy Structure The above ground fish pond features high strength stainless steel pipes that are rust resistant and corrosion resistant.