Does Coral Need White Light
The algae need the light for photosynthesis.
Does coral need white light. You will want to have your light mounted to optimize the light throughout the tank. The general consensus is that a PAR of 450-650 umol is good to maximize the color for most of our sps. White light is what feeds corals or rather the zooxanthellae algae in their tissue so just make sure theres plenty of it and if its too much corals will colour up further to shield themselves.
White Light is Needed for Coral Health and Growth and Blue Light was for Visual You cannot keep Coral Under All Blue Light You need Full Spectrum Lighting 5050 White. Its best to have a fixture to provide the PAR required by the corals you have or plan to add to your reef tank. Actinic or more blue lighting should be used even with metal halide lighting to achieve the best possible coral coloration.
Philips coral care spectrum in red line Orphek spectrum in color. Small coral beads 60 Long Measures 4x3mm small beads. Often described as the best light.
SPS corals require the most lighting while soft and LPS corals can do well even with lower intensity fluorescent lighting. Photosynthesis in order to survive. Blue spectrum light penetrates salt water better than red spectrum light leading to enhanced or dulled coloring depending on which wavelengths the coral is absorbing.
Orphek Atlantik V4 proved to have a stronger spectrum than Philips coral care LED light. You can dress up or dress casual you can also mix and match with other colors. Similar to coral theyll express different color under different light triggers.
Metal halides have been the gold standard. In theory coral in shallow water will appear more red because red light wavelengths are able to penetrate the water and reach the coral reflecting more red spectrum light to the human eye. Its hard to say what wavelengths will do what color wise to a variety of nems.