I see. So best option is to just ride out the algae. I’d imagine they’d eventually use all the phosphates and things would level out. My only worry is the high phosphates and the LPS Duncan’sIt's not just your phosphate number. It's the fact that you have new rock in the tank that's open real-estate to bad algae that causes the uglys. Every tank is different and the nutrient levels they all find a balance with are different. I advocate for everyone to not chase numbers and listen to your corals.
Just for reference I've been at .5-.8 on my phosphates for over a year since setting this tank up. Nitrates anywhere from 30-50. But I started this tank with all aged and mature rock, no spots for the nasty algae to take hold.