I too dont like the treatments or options we have when treating our sick fish. We dont know if this will only stress the fish more. The thing is I also like to wait and see what happens, see if its normal or if they are just going throu a cold, but this is where we sometimes fail, we wait to long. These diseases dont take long to claim a life. I would closely monitor the fishes, anything weird or out of whack. Only you can know this since you see your fish everyday and know how they act. Only you will know when to take action. I must warn you, it can take days for a fish to react to a disease and then die, or it can be fine and seem to be doing great on its own, and then suddently it dies, as I have learned in the last couple of days.