A bulb that simulates natural moonlight to allow nocturnal viewing without disturbing the animals day & night cycle. The light emitted is bluish due to the use of blue glass & the heat generated by the bulb is minimal but enough to provide tropical night time temperatures. Can be combined with Repti Glo or Sun Glo for a 24-hour cycle. Available in T10 15w (shown), 25w, 40w & in A19 50w & 75w