Thank you for all you input and support.
This is what I have done...
I spoke with my father(he's a Dr.) about medications. Using formalin is similar to chemotherapy for people. The end result is to poison the body just enough to kill the disease, but not the patient. One thought he had about Valiant's recovery, was that unlike human patients. Valiant is being exposed to the "raditation" 24/7 due to being contained in a 15 gallon tank. This will potentially cause a fatal over dose of the medication. Hence, why his health is not improving.
My father also commented that one reason why neosporin is a good medical cream to use on fish( he therorized) is because of it's chemical make up. It is made to adhere to the skin and slowly be absorbed giving the wound more exposure to healing. This effect also keeps water from washing the medicated cream off, hence why he thought it a good skin medicine for fish. It will not wash off the patient and contaminate the water. He said that this would be the main reason he would not use the antibotic soap. It would either be absorbs straight through the skin-killing the fish; or pollute the water and kill the fish.
So after the conversation with my father I made sure everything was equal between the QT and DT. I treated Valiant with neosporin(looked like he had gotten snowed on). He seemed to almost enjoy it. I used a Q-tip to apply the cream. He held still while I did it. I could feel him relax in my hand...he was so itchy he leaned into the Q-tip.
After I medicated Valiant, I returned Flash and Valiant to the 90.
Flash was extactic to be home. But Valiant was very worn out from the med treatment. After a half hour he started poking around the rocks...still very lathargic. Most of the time he would lie still on the sand bed. I went downstairs and let an hour and a half go by.
I finally dragged myself upstairs....to my amazement Valiant was up and swimming around! He hasn't be out swimming for the last 2 days, just to come out and eat. I was so thankful to see him swimming. I fed him dinner and enjoyed watching him chase the mysis. I haven't seen him in predator mode for at least a week. I do not know what tomorrow will bring, but I feel better knowing my pets are happy.
Thanks again all for your help and suggestions.
happy fish, Rykna