Is this product safe for my aquarium?
I have one very large goldfish that's having some issues. I was told to use the Jungle Lab's "Lifeguard All In One Treatment". I also have a small sucker fish in the tank with him. He's scaleless, and the package says the product isn't suitable for scaleless fish. Does that mean it will harm him, or just wouldn't work if he was the sick fish? I don't want to pull the goldfish out to treat it, if the tank is infected and needs to be treated also. Does anyone know if I can just use this product in the aquarium with both fish in it, or will it harm the sucker fish?