Hello, about a week ago my lionfish had cloudy eyes and looked a stressed, so I went to my LFS and asked for their help. They said it looked like a fungal infection and recommended me Melafix and told me to dose it daily for 6 days and do a 25% water change on the 7th. it is the sixth day and now everyone in the tank looks pretty bad. Especially my Gulf Toad Fish. My stocking list is a maroon clown, volitan lionfish, and gulf toad fish. any help, ideas, or advice would be appreciated. I just tested my levels before I do the water change and they are, Ammonia 0, Nitrite 0, Nitrate 5, Phosphate 0.25, ph 7.6, temp 80, and salinity 1.025.