Ouch man, that said having a large tank a cleaner wrasse is a lot more of a feasible option since it will have lots of food sources available, and you very well might have ich forever in the tank just flares up every now and then. Someone with a much smaller tank I would not recommend a cleaner wrasse at all.
Cleaner shrimp might help with relief of dead/dying flesh of fish though.
I have a pair of cleaners in 55 gal and one in 180 gal. They all eat pellets.