Yesterday I noticed that 2 of my Green Severum's have ich. I usually move a sick fish to a qt tank. But I have 2 angels in the qt tank at the moment. I also usually use Tetra's ich medication and it works fine. My question is this, since it is a 125 gallon tank I do not want to spend a fortune on the required treatment. So what I did instead is do a 50% water change, raise the temperature in the tank to 82 degrees and added one tablespoon of aquarium salt per every ten gallons. From what I read, I am supposed to leave it like this for 5 days and do not add more salt during this time. I want to know if this is the right way to go about it. I want to add some airstones and maybe raise the temp a little more, but the Oscar destroys any air stone or sponge filter I try to put in. Any suggestions would be appreciated, by the way before any one asks. I have a fluval fx6 and 406 filter running on the tank so I think I may have enough aeration to raise the temp a bit higher.