Elite Stringray Internal Underwater Filters Elite Stingray Internal Underwater Filters – ELITE STINGRAY underwater filters combine style with silent performance. Provides effective mechanical, chemical and biological filtration. Complete with zeo-carb and foam filter media and equipped with a convenient flip top cover, cleaning and or media replacement is made easy. Includes multi position directional water flow output. The Elite Stingray is designed to fit into any type and style of aquarium. Filters available: Stringray Filter 5 – The ELITE STINGRAY 5 is ideal for aquariums up to 19 litres. Stingray Filter 10 – The ELITE STINGRAY 10 is ideal for aquariums up to 50 litres. Stingray Filter 15 – The ELITE STINGRAY 15 is ideal for aquariums up to 75 litres.