I can’t see the video, but it is normal for corals to be stressed when first added. Mushrooms are pretty tough. They can handle some worse condition swings as well generally.
parameters somewhere near:
Salinity: 1.025 to 1.027
Temp.: 77 to 79 degrees F.
Nitrates: below 5 ppm is best for long term health, however they tolerate much higher levels for a period of time
Phosphates: below 0.05 ppm
Water Flow: Moderate to Low flow but not directed at the Mushrooms
Lighting: Moderate to Low
and it should do fine