When making adjustments to your aquarium’s lighting, or really any piece of equipment for that matter, be sure the changes are minor and try to space multiple tweakings across at least a little bit of time. In our captive environments, corals are sensitive to change, especially with rapidly continual fluctuations of certain parameters. While changing the spectrum of your light may have no effect, changing the light’s intensity surely will. So be careful and make small, gradual changes over an extended period of time. This lets the corals adapt to the new light setting without causing any of the negative side effects.