Yes, a SW dip will do the same thing but doesn't treat the ich in the tank. Your loaches are very sensitive to salt. Whever treating FW fish w/salt, add 1tbsp/10g, raise the temp to 86 & do huge (80%) WC every other day, being sure to clean the substrate, for a week.
See: TREATING FW ICH
Now, if you only see a few spots, you may not find it necessary to treat so aggressively but if you have loaches, they can succumb to the parasite & die very quickly.
See: TREATING FW ICH
Now, if you only see a few spots, you may not find it necessary to treat so aggressively but if you have loaches, they can succumb to the parasite & die very quickly.