Lightrails - next big thing in reef lighting?

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If running a single small pendant would be thinking something that continually goes back and forth.

We are already playing games with algae lighting (24/7) and corals having spot lighting, instant off and on with timers, overall durations different than the reef, some people running 250W bulb and others 400w or T5s or different spectrum on the same species. Just wondering lightwise, how much we can fool the coral so they believe there under the surf in Fiji.

Also at what point would this be annoying to the viewer.