info seems to say two different things

[bsmiddleton]

Long time listener, first time caller.
I'm new to saltwater - not even at it a year yet but I did keep cichlids for about 20 years.
I decided to post here because I'm running into what would seem like contradictory info.
I've got a yellow tang with black spot. Didn't seem to have anything in the QT for three weeks. Moved him to the DT and about a month later saw the spots. I've read they are a flat worm. Flat worms feed, fall off and basically burst into babies. Gross. I've read that the best thing to do is to a freshwater dip. However, if they are already in the DT and can live on other stuff in the tank as I seem to have read about flat worms, won't the dip just kill the spots on the tang leaving conceivably a large number in the tank or am I missing something? I dipped mine twice , have a 6 line wrasse and a cleaner shrimp and the spots came back in larger numbers. So is it freshwater dip or prazipro?
thanks in advance
Scott

[backdraft]

if you can get pictures of the fish and the spots it may help in a diagnosis.

[nereefpat]

Black"ich" is what we're dealing with, I assume.

You're right, freshwater dips and prazi should be effective. I believe the dips should provide immediate relief, but as you said the tank still needs treated. Prazi should be fine in the display tank.

Might want to wait for a +1 on this, however. I haven't dealt much with black ich. It shows up commonly on yellow tangs, but I think it's just the color contrast making it more noticeable than on other fishes.

[bsmiddleton]

It's definitely black spot/ black ich/ paravortex. I'm not even sure my phone would be able to get close enough to get a pic of it as the fish never stops swimming.
So the dip is for immediate relief and to try to stop a secondary infection where as the prazipro is still needed to clean up the rest of the tank. I wonder why so many posts only mention the dip.

[nereefpat]

So the dip is for immediate relief and to try to stop a secondary infection where as the prazipro is still needed to clean up the rest of the tank.

Or dip the fish on its way to a qt tank, while letting the display go through whatever length of fallow is required.

I'm hoping someone with a little more disease knowledge will chime in here.

[bsmiddleton]

Too many fish to go into the QT while the DT is fallow. But I think I have it now.
thanks

[CStrickland]

I've dosed prazipro several times without issue. I'm not up on all the diseases, but between the two choices you've presented I would def try it first before catching and dipping. I'd only FW dip to relieve symptoms if the fish were in real distress. Like, so messed up you don't really have to chase him much. There's also a fish disease subforum here http://reefcentral.com/forums/forumdisplay.php?f=87 that can be really helpful. I've gotten wonderful advice in there from folks with tons of sw experience.

[bsmiddleton]

That makes sense about the stress. I'm ordering prazipro today.