Trumpet Corals Under Actinic Lights

Metal Halide Double Ended Replacement bulbs from Hamilton Technology. High spikes in the 420nm range. Vibrant Actinic Blue Light 20,000K simulates sunlight at ocean depths of 12-25 Ft. Intensifies fluorescence in fish, corals and marine life Promotes the development of photosynthetic plants,…

I have my LED actinics come on 1hr before my main lighting comes on and for 2hrs after.

Does LED lighting provide any "benefit" to corals when you run only actinics after your main lighting comes on or off?? Benefit meaning helps corals color-up???

sBar Supplemental Actinic Bar Light

My understanding is the actinic lights are not in the range for chlorophyl to utilize. actinic is very blue blue lighting that penetrates into the deeper water conditions that corals grow in. while the water gets deeper less light penetrates and the longer wavelengths(red orange) become weaker as the shorter wavelengths(blue) become stronger compared to 10,000k , actinics are lacking the red,green, and orange light. but actinics do produce a purer blue.

sBar Supplemental Actinic Bar Light

Second: I have PC lightning over my 100g reef, 4x96watts. Two daylightand two actinic bulbs. Because it's soon time to change bulbs I wasthinking about making it more blue, so it would be 2xactinic and2x50/50bulbs. I know corals need more daylight, but since that tank isshallow (20inch), and I keep only LPSs (I can put them higher) and Zoasit might work. Or not? What do you guys think about more blue light inthis case?

Re Actinic Lighting Specifics/Reef Lighting 4/2/12

With the growing popularity and availability of fish like and decorations like our own line, “glow-in-the-dark” and fluorescent aquariums are becoming more and more common. Most of these animals and decorations are brightly colored in any light but under special lighting, the colors will really glow. There are two main kinds of light that are used in these aquariums: “blacklights” and actinic lights. Knowing the difference between these two can play an important role in making your tank really stand out, as well as in keeping it healthy. For this blog, we will be focusing in general terms only for community aquariums. Aquarium with invertebrates and corals will have different needs since their light requirements are much more specific and extensive.Making the choice between using actinic or blacklights for your glowing aquarium depends on when or how you would like to view it. and are both available with a variety of actinic and blacklight option. Both actinic lights and blacklights make things glow when the light they produce is reflected off of the fluorescent pigments in the object, whether this is light we can see (actinic) or light we can’t (blacklight). These pigments could be in the artificial coloration of an ornament or plants, or in the proteins or cells of a living creature, either artificially or naturally. Many plants and animals that we don’t think of as “glowing” have pigments that are fluorescent under the ultraviolet range. This can help them to blend in or stand out to other animals that can see this range that we can’t. Fish like GloFish have been enhanced with proteins from these fluorescent creatures at their embryotic stages so they can share in these glowing traits.