smudges on fins

so iv had my fish in quarintine from ich and it just reached the 8 week mark and im ready to start adding fish, the only issue is that i see white smudges on the fins of my scotts damsel and my watchmen goby the damsel didnt get it until another fish nipped it so im pretty sure that was infection but it has sense gone away mostly the goby im not sure of because it wasnt nipped i dont believe, any ideas i know i need pictures and i will get some up tommorrow when i get home from school but any preliminary diagnosis. thanks