A range of 3 fully submersible low voltage energy efficient LED Air walls in 3 different sizes (16cm,34cm,52cm) with a colour change format which randomly cycles through seven different colours. These Bubble wands are flexible in design and are suitable for Coldwater, tropical aquariums., they are a great way of individualising your aquarium style. The enhanced bubble 'curtain' provides vital oxygenation to help maintain the health of fish, whilst allowing you to wrap around existing decor and plants.