Corals closed and I don't know why!

[LionHeart2017]

Coral are being starved of po4 by the algae is my guess, I've had very similar situation, zoas closing up and withering away, added some phosphates for about a week or so and within 2 weeks they were opening again and looking better, but algae grew more rapid so now I'm not dosing phosphates,algae is getting back to normal so I'm hoping I balanced it out a little with more feeding, my, my next plan is more fish so I can feed more

 

[Aaron iReef2]

Thanks for the advice. Would dinos cause corals to close even if the dinos aren't directly on the actual corals but more on the glass or rocks?

I have seen dinoflagellates stress corals that are in proximity , even when the algae isnt touching. Dinoflaggelates kinda look like diatom algae at 1st, but when it grows it will trap bubbles in the algaes tissue. Then it tends to string upward. Hopefully you can positively id that algae in the pic

 

[pomoev]

Not sure how to find watts but at the highest peak I have 16% UV, 24% V, 37% RY, 36% B, 3% G, DR 4%, 14% CW.

My bet it's way too much light. Decrease the levels by half and keep it this way for a week or two. Also, how high is your light above the water?

 

[PugsAndFish]

My bet it's way too much light. Decrease the levels by half and keep it this way for a week or two. Also, how high is your light above the water?

I think it was a mix of alk swing and dino. Both settled now and things are looking great recently!