Aqueon 34506 ProFlex BioMedia Accessory Pack, Model 3
Accessory pack includes filter media and tray, a trickle-down grid and bioballs. Used in wet/dry setup. Using the BioMedia Accessory Pack, turn the ProFlex into a traditional wet/dry trickle filter. Great for use in freshwater and fish-only saltwater applications to provide advanced biological filtration for a heavy fish load.