formalin, you can dip, but if you do not feel they are strong enough for it I had one that was 2 drops per gallon, everyother day til clear then repeat in 10 days. I also maroxy and maracyn 2 to combat secondary infections.
You will need to use a
quarantine tank b/c it will kill all inverts and bacterias and you will want to use an airstone b/c formaldehyde binds with O2. If you have no fish in the tank you should let it sit at least 6 wks, to kill what protoazos that might still be in it. Also you do not want sand or rock in b/c it will absorb the medications making them less effective.
Copper will do nothing to the brooklynella.