Eheim Skim350 Coarse Foam Cartridges， 2 count

EHEIM Skim350 Coarse Foam Cartridges will help keep your underwater companion’s water column crisp and clean! Each cartridge works to trap debris and particulates before they become a problem. Designed to help prevent your pump from clogging， you can count on long-lasting benefits for your swimming buddies. Engineered to perform both mechanical water purification as well as biological decomposition， these cartridges are ready to go after even a short maturation period. They are built to be a perfect fit for your existing EHEIM Skim350 Micro Surface Skimmer (sold separately).