having a delemma, my fish won't eat!

[bvj33]

I have a 55 gallon tank, and the fish I have left(long story) will not eat, the tank was medicated with coopersafe, and then maracyn for secondary infections. I lost 5 fish, but these guys seem better but are not eating any of their fav foods, my mollies r eating, but not my dwarf gurrami or my 2 australian rainbow fish. the water test come back pretty normal accept the kh is high 180. The test kit reccomemded partial change and I did do that but no change. Its going on a week since these three fish have not eaten anything. Do I medicate again?Please help