So i did my water change maybe an hour ago. I had let the salt mix (oceanic) mix for about 36 hours brought it up to room temp. then changed out 5 gallons maybe 20% of the total volume. just looked at my tank and all my corals are out and open like normal, but there is my six line by some rock in the back corner swimming near vertical nose down moving maybe 2 inches up and down. He has splotches on him that i wouldnt say are red but the overall discoloration is a red tinge in those splotches but with the same pattern. I fed the tank pellets and my clowns came out and ate like normal. The sixline doesnt usually eat pellets so im thawing some frozen now. Any ideas? I cant get a good angle in which to take his picture but will keep trying.