Infusoria culture could use cement tank or aquarium.
Other component needed are straws, lettuce or banana fof its media. Taro leaves are sometime used.
Straws, lettuce or banana boilled and put in a tank that have filled with water. After one week add an infusoria starter. An easiest starter is a spoon of water from water ditch or pond with organic matrial.
Infusoria harvested after a week. Infusoria is looked like a white cloud layer in water surface.