That jungle food is hard to get down a fish that isn't eating, you can try dipping it in fresh garlic juice but don't be supprised itf they don't take it. I would go with a round of Jungle brand parasite clear tablets, which are sold at both stores. I have never lost fish during a treatment, they seem to be pretty gentle meds.
If you are absolutely certain they are callamanus worms then the Jungle product doesn't work and you will need some levamisole HCL, which can be ordered thru this website :http://www.inkmkr.com/Fish/ItemsForSale.html
If neither one of those work, then I suspect you might have a mycobateria infection of some kind in which case a total tear down and disinfecting with vinegar will be necessar (let's hope it's not that).
If you are absolutely certain they are callamanus worms then the Jungle product doesn't work and you will need some levamisole HCL, which can be ordered thru this website :http://www.inkmkr.com/Fish/ItemsForSale.html
If neither one of those work, then I suspect you might have a mycobateria infection of some kind in which case a total tear down and disinfecting with vinegar will be necessar (let's hope it's not that).