This is an established reef over 2 years running. I noticed my Talbot damsel would kick up sand whenever he was hungry. Every time he stirred up the sand bed I would notice a brown patch would appear. This went on for a while, but never got really bad. I decided to evict the damsel. To get the damsel out I had to remove the rockwork which ended up stirring a lot of sand. Since then, the dinos have taken control.
I'm assuming it's dinos. I know it's not cyano because I already tried a chemiclean treatment and no effect.
I would like to avoid a blackout due to the tank being filled with some of my favorite corals and would hate to stress them out further.
Po4- .224
No3- 6.7
What do you guys think would be the best approach?
E- attached some photos, and I'm skipping scraping the glass at the moment to give other algae a chance to compete

I'm assuming it's dinos. I know it's not cyano because I already tried a chemiclean treatment and no effect.
I would like to avoid a blackout due to the tank being filled with some of my favorite corals and would hate to stress them out further.
Po4- .224
No3- 6.7
What do you guys think would be the best approach?
E- attached some photos, and I'm skipping scraping the glass at the moment to give other algae a chance to compete

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