Hyposalinity to treat Ich

[George]

Basic components for a QT: a tank (a 20G or 29 G is good for a couple fish up to 6"), a filter like aquaclear 30 or 50, a heater, some PVC pipes for fish to hide, and an ammonia indicator badge. Optional components are powerhead and airpumnp. If you do hypo, a good, calibrated refractometer is a must.
If you don't have a sponge for the filter seeded with bactieria aleady, you need to do more frequent WC for the QT.
QT all your fish and leave your tank fallow for 8+ weeks.
Cleaner shrimp doesn't work for ich because ich hides behind fish skin and inside fish gill.
Good luck.