The zeolite is of very good quality and would highly recommend it. Seller despite problems with the parcel service of their way. Therefore, full marks. Use me, the filter media of a pond filter. There were problems with me unfortunately once again with the parcel service. Although I have sent a written information to the storage of the packet, the packet was sent back to the seller. Lt. Parcel service has never received this information there. Had thereupon again an information sent. From me the parcel would get a smooth 6 !! But apparently the problem of many parcel services is the lack of far-sightedness and not an isolated case.
But the seller can but nothing .... he had the shipping even wear twice .... Nevertheless, many thanks to the seller !!!