Tetra BettaSafe conditions tap water to make it safe for your bettas (Siamese fighting fish, or betta splendens) by neutralizing harmful chlorine, chloramines and heavy metals present in most municipal water supplies. Condition water monthly to protect your bettas and reduce stress. Use 7 drops per gallon (2 drops per liter).Betta fish are best known for being small, colorful pets with big personalities. Male bettas in particular have an amazing variety of tail shapes, ranging from half-moon to spikey and crown-like. Since bettas require minimal maintenance, they're a great species for beginners. If you're keeping bettas in a larger aquarium with filtration, be sure the intake and water outflow are gentle. If a single betta is kept in a bowl environment, filtration may not be practical, so complete water changes should be performed weekly.