yes---wet the sand with tank water in a baggie or drinking glass, lower to the bottom carefully, tip out, then stir in very slightly, not disturbing the old sand, but gently encouraging the top level to mix in its bacteria into the new sand. Do this only in patches. You don't want an algae bloom. Remember, too, that the reason the dust flies on new sand is that the bacterial film that holds it to the substrate does not yet exist. So don't overload it.