White patches on blue tang

[Gmelink]

Can someone please help me. My 11 mounth old blue hipo tang has these big white patches on him by his tail. He is a very happy fish. Very healthy eater.
I cleaned the tank yesterday like I do every two weeks with a 20 gallon water change. The only thing I did new was add 7lbs of live sand to the tank to fill in some areas. Now my fish looks sick.

 

[pinnatus]

I assume it is a hippo tang versus a powder blue?

What size tank, what tank mates, water parameters, pictures?

 

[Gmelink]

100 gallons, Hipo tang
Salinity. 1.025
Water temp 78 degs
Kh. 11
NO 3. 15 ppm
Cal. 490
Mag. 1400ppm
Ph 8.2
Tank matts. Nazo tang, yellow tang, clown fish, cleaner shrimp, ref lobster, scota blenny, banded coral shrimp, peppermint scrimp, sand sifting star fish, magnificent fox face
Soft corals
Having a hard time loading a picture. It almost looks like a patch of white mold. Fuzzy

 

[pinnatus]

Load the picture to some hosting site like photobucket, then post it here.

Without seeing the pic, is the patch fuzzy or smooth? How big?

Could it have been the lobster attacking it while it was asleep? Possibly HLLE disease?

Is the fish breathing fast, eating, scratching? Maybe stung by the rabbitfish?

 

[Gmelink]

I uploaded the pictures to shutterfly. The web site is

Saltwaterfish.shutterfly.com

Password - Saltwaterfish

 

[Shanet]

I had similar on my hippo, it had been stung by a coral. It went away after 3 days
It could also be the start of a disease, Velvet.

 

[pinnatus]

I uploaded the pictures to shutterfly. The web site is

Saltwaterfish.shutterfly.com

Password - Saltwaterfish

You need to post the link, with

around it.

 

[Gmelink]

[Saltwaterfish.shutterfly.com]

 

[pinnatus]

No, there should be a link to your picture. Copy the link and either use the photo icon or type

Like this:

 

[pinnatus]

I went to shutterfly and looked at your pictures. I am not sure what to make of that. It is possible that it got stung by something. It doesn't look like any disease I have seen.

Although, you say it is fuzzy, it doesn't look fuzzy in the picture. If it is fuzzy, it may be body rot. If so, I have treated that successfully with Paraguard by Seachem.

 

[Gmelink]

Thank you for your help. I went to my fish store and they told me that it was stress spots. I gave it a few days and it did clear up. I was trying to save myself a long drive. The only fish store I trust is 40 minuites from my house.
I just did not want to see my fish get sick. I worry about them.