I have an above ground pool with a BaquaPure Filtration System. One of the 'extras' I have on this filter is a container attached where I can place these water polishing disks and it automatically deposits the chemical in the pool for a period of about a month. But I have searched the entire internet and can not find any place I can purchase them. I no longer have the box they came in, I can only go by what is written on the dispenser on the filter. Any help would be greatly appreciated. Thanks.