Yellow Tang. Problem?

[tim2]

I dont know whats going on with my yt. It has been kinda hidding for the last day or two. I havnt seen it foraging as usual and it doesnt come out for even myisis shrimp. It has a darker area on its side(coloration) Is he on his way out? all other fish seem to bee doing fine. I have had him for about a month now and he has been doing good. params. Amm 0, Nitrates .5, Nitrites 0, ph 8.2, phos .5, temp 82, salinity 35ppt or 1.025 Any Ideas?

[EdKruzel]

Yellow Tangs are wonderful test kits.
Discoloration is a usual sign of water quality dropping. With tons of macro algae I would recommend a good pruning followed by a 20-30% water change.

If the coloration becomes a red color it is an infection setting in, more than likely bacterial.

The above advise is better than medication. I am against medications and prefer natural methods to treating ailing fish.

Pristine water, nutritional foods, and a low bioload are all that a fish needs.

Ed