This double ended aqualine 20000 250W blue lamp emits light strongly in the blue end of the spectrum. The use of this "actinic" lamp enhances the fluorescent blue and green colors of many corals. The lamp should be used in combination with aqualine 10000. This combination gives the aquarium a beautiful bluish hue.
For easy ordering and savings on shipping, these bulbs come in packs of ten (*Not Required). Price is per bulb.