Key Features Colourful Realistic looking reefs Sits over the Bubble Tube Ideal for BiOrb 30L and larger Easy to place Low Maintenance Oase biOrb Colour Reef Corals are an attractive and striking decorative ornament that can be added to a biOrb Aquarium to create an eye catching display. Each ornament has a unique style and colour, adding interest and making a dramatic centre piece for your tank. Simply slide over your bubble tube to make the display you desire. The sculptures are safe to use and easy to fit and clean. Fits multiple biOrb tanks, along with any other suitably sized aquarium. Specifications Purple : Height 21.5cm - biOrb 30L and larger, BiUbe, Life 30. 45, 60L and Flow 30.