Should I treat with copper again

[joec]

Long story short I had to QT and treat all my fish for prazi resistant flukes. four of the five are noq back in the DT after successful fluke treatment.

The last fish still in QT is a 3" Timor wrasse. She had been treated with copper for 30 days in prophylactic QT prior into DT, 10 months ago.

In the scramble to house and treat all fish for resistant flukes, she ended being put in a fishless 1oG by herself that had 6 nassarius snails in it for only a couple days before I put the wrasse in. I took our the nassarius snails the day after I put the wrasse in the 10G. She's been in there for 9 weeks now.

I'm wondering if I should do another proyphlactic copper treatment before I put her back in the DT because of her few day exposure to non QT nassarius snails? Or should I not? She has no signs of illness

 

[HotRocks]

You could get a FW Molly. Convert to salt and toss it in with the Wrasse to see if it's clean. Wrasse could easily be a carrier without symptoms when it comes to parasites. So if you want 100% certainty that it's parasite free you would need to retreat.

 

[joec]

I want to be 100%. If I do the shorter 14 day treatment you and others have written about, can it go right to DT after 14 days or do I have to put it in a sterile tank after treatment prior to DT? I know I have to transfer to a sterile bucket of fresh saltwater with matching copper, temp and salinity to the QT as the first step prior into either the DT or sterile QT.