Key Features Replacement centre Bubble Tube Made from strong plastic Easy to fit Fits the BiOrb Life 30L Tank 27cm Long (overall) BiOrb Bubble Tube Replacing the Bubble Tube in your BiOrb aquarium is simple. Here we have a selection of accessories and parts for you to choose from. If you find yourself in need of replacing your BiOrb centre bubble tube then look no further. Supplied with the base, this tube will simply fit in with ease Fits the BiOrb Life 30L