Same old mantra
Same old mantra
If you have inverts in the tank, you can't medicate the tank.
Reason being, ich is an invert. What successfully kills ich also successfully kills inverts.
I know its somewhat sacrilege to say, but most tanks at some point have ich. When outbreaks occur, you need to look at your water quality, temperature fluctuation, etc. Fish live with this parasite in the wild. If you keep your water quality top notch, your fish will be able to fend off parasite to some extent until the outbreak subsides.
If you like voodoo, and your water quality is indeed top notch with little fluctuation in temperature. Then you can try this.
() Increase the temperature of your tank by a half a degree a day until its in a *high* safe temp. Say 80 degrees.
() At the same time, slowly decrease your salinity to 1.020.
() While all this is occurring add recommended doses of garlic extreme and vitamin C.
If it were me, I'd forgo the temp and salinity change and instead give the bottom of the tank a good vacuuming. Then perform daily consistent water changes while also dosing garlic and vitamin C. That is if you really can't catch the fish and place them in a QT.