I would leave the seeded filter media in the tank for at least 1 month. Too, it may speed things along if you can add it into the filter itself.
Have you added the fish? If so, be sure to keep an eye on your water parameters just in case the cycle isn't instant. If it isn't instant then it will surely cut down the amount of time it takes to cycle. Daily water changes with Prime or Amquel + would be needed.