Wave point Coral wave coral growth accelerator 39 watt 2 pack of high quality versatile high output T-5 lamp which can be a universal replacement lamp for industry standard high output T-5 light fixtures. This is the next generation in Actinic light, the bulb is a combination of two different color spectrums it has red light that is very similar to the Red Wave light bulb and is combined with our Reef Wave 420 nm actinic light. The emitting light provides proper light spectrum for growth of photosynthetic corals. With the current trend, many high output T-5 light fixture come only with high kelvin temperature bulbs standard in there fixtures, thus eliminating lower color spectrum. This lamp helps enhance red and yellow coloration and provides the eye popping fluorescing color of an actinic 420 nm. For use: Saltwater and Reef Aquariums.