We keep a gallon glass jar and lablel it for each beta's hospital. There is myacin and antibiotics for them they get dropsie and paricites. Also if you put a single rock of aquarium salt in their water it helps as a preventitive. We sterilize their bowls like you do if you can food. We boil, then cool water for them treat it with a chlorine remover. We feed them beta pellets. 2-3 2xs a day. My oldest has had hers for about 2 years. He went to college this year.