The Red Sea Reefer Media Cup 10 cm diameter, replaces a gift bag and can also be used as a filter media cup. Comes with a high quality filter media bag.
The bag can be filled with, for example, an activated carbon or biological filter material. The Media Cup can also be filled with filter cotton wool and thus serve as a "power filter / mechanical pre-filter". You can simply throw the filter cotton in the bin and then replace it with new filter cotton.
Cup dimensions: 10 x 10 x 21 cm