I saw someone use a black tea bath for an axolotl with either a fungal or bacteria infection,would this work with fish too? Like betta or gourami? If so what type of black tea, I'm not sure if I would use a decfinated black tea like lipton, or have to buy loose leaves? I prefer to try natural methods before using meds because I feel meds can be hard on the dishes bodys sometimes. But it turns out the natural medication for fungal and parasites I was using I'm allergic to.