ISTA BIO SPONGE FILTER - Rectangular BIO FOAM - Large (up to 50 GALLON)

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  • Mechanical filtration: Provides excellent filtering effect while oxygenating the water
  • Biological Filtration: Foam material supports the colonization of bacteria
  • Can be used with either an air pump or any external filter
  • Silent operation by reducing air pump noise
  • Easy to install and simple to maintain