Hi so I have cycled my tank all my water levels are great and so is my salinity I just added a black and white and a percula clownfish yesterday I acclimated them correctly but this morning they are breathing heavy and laying at the bottom what do I do I don’t know if they dying or stressed out I tried turning my Powerhead off for a few min it didn’t seem to help the crabs and polyps I have are doing great and there are no spots on the clownfish are they ok???