Ah, yeah. My brain disregarded that descriptor for some reason. Maybe because she said "polysorb" and he said "blue pad" are why my brain went to polyfilter. But Purigen would make more sense. I would imagine that the other "rechargeable" medias from Seachem look similar. I haven't used any of them, but I would imagine so.Polyfilter isn't a pillow if small white bits.. maybe she was thinking of Purigen