Should a twin tail betta fish have high or low turbidity?

The water for a Betta should be spotlessly clean and pure. They like slightly acid around pH6.5 to 6.8. hardness around 5dGH and a temperature of 78F. Contrary to some illinformed peoples belief. Bettas also need at least 3 gallons of water to live in, a permanently running filter, and a regular weekly water change of at least 50%..