My transformer has stopped working
The most common cause of failure in a Reef One AC Transformer is the use of a bulb of too high a wattage being used in the halogen light unit. The halogen light unit and transformer are designed to be used with the Reef One 10watt bulbs - higher wattage bulbs will permanently damage the transformer and/or the light unit.Replacement transformers are available here: UK Transformer Accessory
