Prevention is better than a cure, keep the water and food quality up and you will avoid 95% of all problems.
I would use ammonia to clean a tank. Any left over will be used while cycling the tank. However, the second you put fish in it there will be pathogens. Your tank will never be sterile, there are always pathogens around. Fish get sick when they are stressed by something (aggression, water quality, food quality, etc.).
I would use ammonia to clean a tank. Any left over will be used while cycling the tank. However, the second you put fish in it there will be pathogens. Your tank will never be sterile, there are always pathogens around. Fish get sick when they are stressed by something (aggression, water quality, food quality, etc.).
