Originally Posted by DreaminginBlue
It was supposed to be for everything- Tetra LifeGuard. Going to get multiple chambered breeding net ASAP. I hope he isn't sick.
As in most things in life, if it claims to solve all your problems it's probably a scam
The closest thing to a cure-all for aquarium fish diseases is actually just plain old salt, and even that will only get you so far.
The active ingredient of lifeguard is actually effective against quite a few different problems. That said, there are plenty of things it doesn't help with. I would be cautious using it without knowing with some certainty what you're treating.
I think the injured fish will be fine. If it starts growing fuzz on the injury, then it's time to do something, but fish are pretty resilient