What is this growth on my live rock?

PoppyD88

New Member
Is this growth on my live rock good or bad? The live rock has been in my tank for about a month. There’s about 40lbs of rock. I don’t leave the lights on often, I leave the white led light on from 10am-7pm, then a blue moonlight from 7pm-12am. I turn all lights off after that until 10am.
 

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