No...you can't do the one hour dip now...too late for that. That process is only for new fish before introducing them into your tank. You now have what appears to be not just one, but several diseases in your tank...taking fish out, dipping them and returning them to your tank will do no good...because now the parasites and bacteria are in the tank - in your water, your rock and sand.
You are now going to have to treat the entire tank

Oh ,no ,I was asking about that for new fish in the future ,not the fish I have now.

I'm not that stupid :wink:

+1, too late for the one hour dip for now, but in the future, you simply fallow the directions on the bottle for the concentration and I don't even put an airstone in there. I usually acclimate the fish in the bag for temperature. then you can either drip with the tank water or put a little bit of tank water in the bag every 5 minutes. Just make sure you don't drop any of the bag water into your tank! Once the fish is acclimated, I do the one hour dip, then I remove it from the bag with my hands and put if in the tank. It is best to watch over the fish during that hour, just to make sure it's not too stressed.