ESHOPPSMANUFACTURER OF AQUARIUM FILTRATIONS Nano Filter Socks | 3 Pack | 2.75 in | 300 Microns | Micron Socks | AIO Filter Socks

no noticeable residue with pre use soak.very satisfied

Really hard to clean. Over charging for 2 socks that were shorter than described

The media could not be loaded.  Bought these for my waterbox cube 10 because the factory ones are $14 a piece. They are the same quality and even though it says they can be used up to 3 times I'm sure they can be washed multiple times like the waterbox brand.