hello does anyone know what the difference is between the two Gardena Aqua bloom sets for 82.90 or 83.90 ? Item no.: 12509297 and 17702369. One of them comes with a water container, that's for sure, but the price difference is only 1 Fr. Can this be? Is there a difference in the device itself or in the dripper that I have overlooked? Thank you very much. Lg