Visible... they are scratching against my heater, airline, fluval 405 return hose, and aquaclear powerhead attachment filter..!! arghhh.. using ich attack. Thinking about adding some salt.
exactly... i would start with 1KG per 100G (or 2.2 pounds /100g).
disolve and add over 1 hour.
Hope the itch clears up sooner rather than later bro.
strange, but i had 2 indos few years ago, (still got em now), and i had serious white spot in the tank for 2 years. wiped out everything, exept the tigers (which were 4 & 5 inch at the time). i think small tigers are much more suspetible to itch than larger ines.