Yesterday I moved 4 juvi Lab. M'bamba and 2 juvi Maingano into my 55 gallon.....Everything seemed fine yesterday and all night but one of the larger juvi M'bamba is struggling to move around, has swollen eyes and they are slightly milky around the bottom edge. My water pH:7-7.5 KH: 120-180ppm GH: 120ppm NO2: 0.5ppm NO3: 20ppm Ammonia: 0ppm, I did a WC this past Saturday and added a few rocks that I had bought a couple days prior. I spent two days scrubbing and soaking them in hot water then letting them soak overnight in water with SeaChem Prime in it. No one is exhibiting behavior like this other than this one juvi. I am going to have a hard time setting up a hospital tank b/c I have 4 more juvi's in the small tank that need growing out. Any help would be stellar......Thanks ~L~ You can see my tank specs in "My Tanks" section of my profile.