125 gallon South American fish community

[Hugsplox]

Considering I went through around 3 other treatments with no luck and then witnessed the ich practically vanish the second I started using Ich-X, I can say it's worked well for me thus far. Probably different strains of ich that are more resistant to a given medication?

That’s definitely a possibility, even humans respond better to certain medications over others. Just offering an alternative should you need it, but If it ain’t broke ya know lol