hippo tang and acne?
 

it looks like my hippo tang has acne...........still swimming strong eating good not flashing or anything he has been in a QT tank for about 6 weeks
anyone have any ideas what this is/? he didnt have it when i bought him.......
http://i194.photobucket.com/albums/z...c/IMG_2551.jpg
http://i194.photobucket.com/albums/z...c/IMG_2549.jpg
http://i194.photobucket.com/albums/z...c/IMG_2547.jpg
http://i194.photobucket.com/albums/z...c/IMG_2546.jpg
http://i194.photobucket.com/albums/z...c/IMG_2543.jpg

Looks like scars from HLLE ??

ok after doing a quick google it says carbon may cause this or lack of a good diet or water changes....

thinking back it devolped as soon as i put carbon in the filter..........hes a picky eater and only seems to eat new life spectrum pellets.... hes in a 20G QT and i change 5 gal every 5-6 days so i cant see a lack of water changes being the cause

thanks for the quick reply!!

try feeding nori, it may help

ive been trying to get him to eat nori since day 1 i tried it soaked in selcon soaked in garlic from a algae clip...........maybe ill try wrapping in on a small piece of PVC with an elastic band?

yeah that might help, or try a different brand of nori. mine wouldn't eat it until he saw other fish eating it, now he guns it down like its going out of style

ok maybe thats an idea i just have to go to a different store coopers foods only had 1 kind of nori that wasnt flavored

That is what it is all right.
If your water conditions are excellent it could only be the food.
Algae is the food necessary for tangs except the hippo tang which is a meat eater.
It will heal but you need to feed it high quality foods like fortified mysis and the like.
Try some spirulina flakes both dipped with garlic/selcon and without.
Also try some broccoli in the microwave until it gets soft and float a branch of it in the tank.
Another possible cause is stray electricity and you can buy a ground in the lfs to deal with this.

I feed frozen plankton....you could try that

High nitrates can also cause this. What is your No3 reading?