My hot water tank has tons of crud in it from our hard water. I would never use it. It is abrasive. I clean out the tank by attaching a hose and it floods the driveway with all sorts of white stuff. If you have to do it, get an sink adapter for the hose and run a hose through your kitchen. That way you get cleaner water out of the tank and can mix it with the cold tap. Most importantly, make sure the lady of the house is away from the house.