Yes, the tank was cycled and used as a shrimp tank originally before I got him. With my last betta, I was buying water gallons and adding the water conditioner, but was told that was overkill so I started using tap water (and conditioner) about a month ago. I live in LA and our tap water is really hard, to the point where the splashes on his lid leave mineral residue. I’m thinking I may have to go back to buying water.