My hardy tbarbs at least all made it through the heat method (in 10 gallon QT which is what the OP has,) very well. It seems it works for most people. Been 6 weeks now and they haven't infected anything. I think it probably does work best for fish that can do ok in the heat. I was also extremely paranoid and cautious about it though since I was unsure too so did water changes every other day.
You can definitely use meds if you don't have fish it will affect negatively, I just decided to try the natural method before going that route, and it worked well for me.
@lullafishi just do lots of research, and do what's best for the type of fish you get and also don't use my method and meds at the same time lol... One or the other.
* 7 Green Tiger Barbs