Have you got a spare filter etc. Take some media from your established tank filter and put it in the other filter and some of the tank water. I know you need to wait at least 24 hours but obviously you can’t in this situation. Please correct me if I’m wrong. With the Ich you need to do a 75% - 90% water change, substrate clean and inside glass clean. Temp needs to be raised and Increase aeration/ surface turbulence to maximise oxygen levels in the water for 2 weeks but I’m not sure how you can do this while you are treating with aquarium salt for the bacteria infection if this is what it is. Maybe
@Colin_T can help out abit more for you hun as I don’t want to give you information that could be incorrect for the situation. Good luck