Available at Notcutts comes the Transformer. Plug your bi Orb air pump & light into this transformer at the same time to eliminate the need for two separate transformers. bi Orb transformers are very reliable & rarely need replacing; if yours has stopped working & you have a standard light unit, check that the last bulb you fitted was the right size. If you have fitted a larger bulb it will 'blow' the transformer & stop it working. If this is the case, replace the bulb before plugging into your new transformer. Suitable for all sizes of bi Orb + bi Ube aquariums. Key Features Eliminates the need for two separate transformers for light & air pump Suitable for all sizes of bi Orb + bi Ube aquariums