The algae looks like bryopsis. You want to remove it and make sure you pick the base from the rock. It can get out of control, and will take over areas of the tank and overpower and kill corals.
Dave B
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560g Display. 1500g System Volume. (2) 180g Outdoor Frag Tanks. 340g Sump, 30g 2 story surge tank. Dasatco EXT 9. Bubble King Skimmer. Ozone. UV. 5' Fluidized Sand Filter. Avast Kalk Mixer.
Current Tank Info: 560g SPS Dominant Reef / 1500g Total System
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