I have a betta that I purchased last night at walmart. I got him a new tank, bought the bottled water they sell and washed everything with hot water before putting Otis in his new home. Today I notice he has white cloudy stuff on his face. He is still alive. What could this be? Am I missing something with water care? Purchased a betta last night along with tank and bottled water for betta. Cleaned tank with hot water before ise. Today Otis has a white cloudy substance on his face. What could this be and how do I help him?