Hi i decided to put an eel in with my oscars and i didnt know the moray eel was suppose to be brackish tank water.. anyway i added a little salt after this.. i added maybe 1 tbs per 5 gallon so it wont hurt my oscar until i get another tank setup in a couple weeks... after about a week i notice a cotton looking fuzz growing on the eels body??? is this bacteria or fungus? what can i do? anyone know?