ID Black dots on yellow tang?

[Delphinus]

4 minutes ought to do it.

It's a flatworm so one treatment is usually enough to get them to literally fall off. In really bad cases maybe two treatments a day or two apart.

FWIW, and maybe this is bad of me, I don't know, but when I was advised what to do, I was told "don't bother matching pH, just use tap water, but DO match the temperature") and the tang was fine and I never had to do it again. (Which is probably good because I can usually catch a fish once, and ever after that they're onto me and I can't get near them with a net.) I'm not sure what you'd have to use if you wanted to match pH. If you could match pH I'm sure it would be easier on the fish.

[naesco]

You are right with the black worm procedure. Adjusting the ph is not necessary
If you are looking at a sick or dying fish everything that can lessen the stress is important though.
You can buy a small bottle of ph-up or ph down at the lfs

[Leah]

I had a yellow tang with black spot and I took him out and gave him a fresh water dip and put him in a 10 gal tank for about a week, if I remember correctly. And returned him to the main tank and never saw it again on him.

[danny zubot]

It's no big deal to adjust the ph. I just don't want to leave the fish in too long. Thanks for everyone's input, I'll let you know how things turn out.

[Delphinus]

They'll be fine for much longer than 4 minutes, but 4 minutes was what I found to be adequate for complete removal of the flatworms.

[danny zubot]

What are the odds that the cleaner shrimp I ordered will remidy this for me? They will be here tomorrow.

[naesco]

Originally Posted by danny zubot

What are the odds that the cleaner shrimp I ordered will remidy this for me? They will be here tomorrow.

The odds are zero.
What's up? Half a dozen reefers have given you the same advice?
Have you dipped your yellow tang?