These round portable tanks can be used for temporary fish holding such as koi quarantine tanks, hospital tanks, koi show tanks, housing fish for winter or for more permanent installation such as home aquaculture / aquaponics. These high quality tubs are made are made of UV resistant 0.60mm reinforced PVC liner and have no metal parts so there is nothing that will rust. They set up quickly . They are available in 2 sizes: 6' and 8' diameter eith a height of 30" (90 cm). Includes supports and 1 1/2" FNPT side drain with inside cap.