Antibacterial for stingray cut

[EthanD152]

After feeding tank with California round ray and baby-ish snowflake eel came back 30 minutes later and saw a half inch cut on the edge of her, red on the part closer to her center mass and as the skin gets thin there is separation of the skin. Pretty bad cut in my opinion as she hasn't had anything like this. she's swimming fine and doesn't act hurt but it was either caused by eel or rock. I know they are super sensitive to medication and she's an older lady 10+ years that i adopted last year so haven't had to treat any issues yet. what medication can i use to prevent any issues during the healing

 

[TX_REEF]

#fishmedics I think there may be some medications you can add to the tank water, or may need to do so in quarantine. I'll let the experts speak.