Quarantined fish for 4 weeks then moved it and itch developed

[LarryZ]

Hey Everyone,

So I bought a six line wrasse four weeks ago and quarantined it for four weeks and everything looked good so I moved it to the display tank yesterday. Then today I notice a white nodule on its pectoral fin which looks suspiciously like ich.

I was just wondering if there is a new treatment I am not aware of or is it still the standard move all fish to quarantine and treat with copper and leave display tank fishless for 90 days to let all of the cysts cycle through? I've done it before but just hoping...

Thanks.

 

[LarryZ]

OK so it wasn't ich. A piece of sand was stuck to its pectoral fin. Worst part is that is what my wife kept telling me and I insisted she didn't know what she was talking about.

Sincerely,
Egg on My Face

 

[nereefpat]

One white nodule on the pectoral fin doesn't sound like ich to me. We would need a picture to know for sure. But I wouldn't do anything until you confirm ich.

Unfortunately, unless the wrasse went through copper or tank transfer method, 4 weeks isn't long enough for ich.

As far as any new treatments...no you still need to pull all fish, treat them, and fallow the tank. 90 days is way too long, however. 76 would be the longest it would possibly take, in lab type conditions.

Again, I wouldn't do anything but observe for now.

 

[falconut]

I do copper, but there's also tank transfer method & hyposalinity. And I believe you only need to leave the tank fishless for 76 days, but 90 wouldn't hurt anything. If you're doing copper, I highly recommend the Hanna copper checker, it helps get the copper level precise.

 

[ThRoewer]

4 weeks isn't enough to be sure that a fish is clean. That would take at a minimum 6, better 8 weeks.

As for ich/Cryptocaryon - with small fish I would always prefer tank transfers as that is the least invasive method to get rid of ich. Copper would be my last resort due to its immunosuppressant effect and the likelihood of triggering a Lymphocystis outbreak.

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[hkgar]

4 weeks isn't enough to be sure that a fish is clean. That would take at a minimum 6, better 8 weeks.

As for ich/Cryptocaryon - with small fish I would always prefer tank transfers as that is the least invasive method to get rid of ich. Copper would be my last resort due to its immunosuppressant effect and the likelihood of triggering a Lymphocystis outbreak.

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I agree. No amount of QT is sufficient for preventing Ick. It can live through its life cycles and never show. TTM, Hypo and copper are the only ways to prevent Ick.

ICH: how to cure it, id it, understand it.