if you acclimate the coral to the new light properly, then no there is not such a thing as to much light, no matter what we do we will never come close to what the sun lays down on a reef.
If you bleach a coral don't throw it out as it will come back, but if you have proper water flow and use proper techniques to introduce your new light then you won't have a problem.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
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