I need help anybody please! I noticed today that one of my guppys had a milky colord tiny patch on her scales right by her dorsal fin. And then when I got home, I noticed the same stuff on another guppy right around his eye. So i talked to the pet store, I the guy told me it sounded like fungus. So i bought API Pimafix. I took out my charcoal, as directed. And put the first dose in tonight. When I went over to the tank just a little bit ago...my pleco was acting super strange. He was sortof proping himself up high, and breathing hard. He is now more relaxed looking, but Im worried about him. It says on the bottle that it is safe for delicate fish both freshwater and salt. And the pet store guy said the same. What do you think is wrong??!!