I think they’re all hatched, how do I removed peat moss from the tank?Don't move the fry. If the water looks dirty or has ammonia, do a water change. You can start filling the tank up a week after they all hatch. Make sure the new water is free of chlorine/ chloramine and has the same chemistry and temperature to the rearing tank.
You can have an airstone in the tank but it should only be bubbling very gently.