Yesterday morning, my yellow tang was swimming around just fine. Later on, around noon, I noticed him hovering nose down just above the sand. I fed as I always do and he just stayed there hovering. If a piece of food happened to float by he would eat it but he didn't actively go after the food as he has in the past.
I have had this tang for about a year now along with a Niger Trigger and a hawk fish. I have a few soft corals also. My tank is a 130 gal
with about 100 lbs of live rock and a 4 to 5 inch DSB
The tank parameters are as they should be. I change 10 gal
of water a week with distilled water. (I bought a large restaurant quality distiller. I do not buy distilled water from a store.) The tank is about a year and a half old. I have been fighting with an outbreak of red slime lately. I am not sure what brought that on. Could this be whats wrong with my tang?
Any help would be great.