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I would just give them a day then move them up and keep doing that one day at a time until they look the best. Make sure they don't start bleaching out though!
I don't think its bleaching
looks like all the crud from the tank it was in is blowing off
it prob was in a tank that had low maintenance
when I got mine it never looked good till I moved it away from the direct flow
it had brown stringy looking things on it
I keep mostly with my softies lol never had best luck with sps
but yours looks healthy but like I said I'm no expert with sps