I have a bottle of mardels quick cure and it says to do a half dose if you have tetras, but i read some stuff on the internet about people dosing full strength with no problems. What do you think?
Tetra's can be a bit funny with parasite medications. Try half dose first and if no problems
maybe add full dose.
If they start to act odd like darting around tank, turning upside down, heavy breathing, dilute the medication
down with a water change.