Transferring from QT to Display
 

I have a bunch of fish in my Quarrantine tank, running Cupramine at .4 -.5 levels,

Both display and QT have same temperature and salinity

Can I just net and and transfer or should I net into a 5 gallon bucket, then acclimate to display/

Thanks

I think you need to remove the Cupramine with carbon and/or water changes and observe the fish for a week or so to be certain the treatment was effective. After which you can match temperature, pH and salinity in both tanks for a direct transfer.