Only one species died

[skiweeangel]

Picked up some green tiger barbs the other week. Everything seemed fine until yesterday morning. I woke up and noticed one was belly up. I knew was was on it's way out and didn't look to close at the rest. Came back that afternoon and noticed another dead and another with popeye. I immediately did a 50% PWC then dosed with melafix. This morning I dosed again and checked my water. Between 0 and .25 ammonia 0 nitrites and 0 nitrates. My 6 danios are look absolutely fine. Should I still continue with melafix? Or wait and see?

 

[George9]

Are the sick barbs still alive? I would still dose for just a few more days just to be safe. Melafix is all natural and isnt going to hurt healthy fish.