Green Terror face injury

[Deaths Sting]

48X24X24'' 120 Gallon.

5 X 6'' Silver dollars.
1 X 8'' Long Fin senegalus.
1 X 8'' Palmas polli.
1 X 8'' L-152 Pineapple.
1 X 5'' Red tail shark.
1 X 8'' Flag tail.
1 X 8'' Green Terror.

Filtration:
Fluval FX5.
and
Eheim 2028 pro 2.

Water Parameters:

pH- 7.4
NH- 0
NO2- 0
NO3- 20<

i just noticed this morning that my newly acquired green terror has a white bump in between its eyes, with a small pin hole wound. the injury was probably sustained in the night, and was self inflicted due to a sudden movement into my driftwood. the pin hole wound is not serious, but the bump is a little alarming. just wondering what is the most beneficial practice to follow for this specific injury?

salt perhaps? if so how much?

Thanks

 

[Deaths Sting]

Help Please.

 

[alotadollars]

that looks pretty big, i have had fish run into rocks and such, malafix might help, i dunno if the bump will go away thats a big one

 

[Deaths Sting]

that looks pretty big, i have had fish run into rocks and such, malafix might help, i dunno if the bump will go away thats a big one

after the first initial day the bump dispersed and 2 larger wounds formed in its place. i took action at that point, i dosed 1tbs of salt for every 5 gallon of water. i am also in the process of gradually making my way to 86F. this morning the wounds looked much cleaner, but it will be a long way to recovery.