Filter Cups

7" Filter Media Cup Our 7" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter media. The round design allows the...

7" Filter Media Cup Our 7" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter media. The round design allows the...

BIOCUP NANOBest upgrade to your Nano/Pico aquarium filtration.Designed to work best with your Deskmate and Mariner AIO.Substitutes your NANO FILTER SOCK to use with your filter biomedia.BIOCUP NANO fits any round filter sock holder with a diameter of 2...