my naso is very stressed to the point it wont move. i thought it was dead. it was behind the rocks and if i turned power heads off it would get pushed back and forth and never try and fight it not even a fin flip so i moved some rocks so i could get it out of the tank and then it moved but went to another cave where i can just one of its eyes but still wont move. im very worried that it is going to die if i cant figure out what is stressing her out. tank parameters are temp 78, ammonia 0ppm, nitrites 0ppm, nitrates 5ppm, ph 7.8, salinity 1.025 before the lights came on. any ideas????????