About Aqua One Platform Black Aquarium 21 litre The Platform 21 Aquarium set is designed to give aquarium a unique floating effect over the base. It comes complete with a fully removable glass lid for easy cleaning, preventing water loss and keeping your aquatic friends safe. Filtration helps to ensure clean healthy water for your fish. This is done using a easy clean cartridge and sponge system. Lighting is provided by touch controlled LEDS, these feature both white and blue LED's with separate blue night time viewing setting. Features Latest Led Lighting technology - Illuminates your aquarium at the ideal spectrum for dazzling fish colors and plant growth Powerful built in filter - Helps maintain clean and healthy water quality for your fish Removable glass lid - stylish looks, with easy access Suitable for Coldwater, temperate and Tropical fish (Aquarium heater must be used for tropical fish).