[Beaten up.]

Just added salt. Crossing my fingers 

[Beaten up.]

I'm already treating 3 days with maracyn two. Should add aqarium salt also or see what maracyn does?

[Beaten up.]

So somthing happend to my platty this Saturday morning. Friday he was fine and this time next day his tail had a chunk taken out of him. He is swimming upside down. 

Parameters are HP 7.0 amonoa 0 Nitrite 0 Nitrate 20 in my planted tank. 

I moved him to my  Quarantine tank. 

I gave him a 10 min etson salt bath. 

I think he got in a fight and was injured. Anything I can try and help.

I have him in a 10 gallon tank. Treating with general cure and maracyn two. If there is nothing I can do I don't want him to suffer. He is still on his side trying to swim upright.