I would siphoned all that you can out and keep up on water changes.
Your tank is going through some sort of outbreak and I would hold off on adding new coral for a little bit until it's under control.
Perhaps starting a new thread with the video of the algea and asking for help about that specifically will help more.
Thank you so much for your help @MERKEY
Yes, tomorrow I'll clean, siphon, and water change.



