It's safe in a controlled environment,environment; when you use medication in your aquarium you need to control the parameters and use these methods:
- Change 40 % of the tank's water volume, once a week.
- Put activated carbon in the filter forto remove the medication surplus medication from the water.
BUT FIRST try to don'tnot use medications,medication; look for alternative methods, for example:
- Termoteraphy
- Aloe vera
- Alimentation change (green peas)