Value Pack of 4! Ready-to-use nylon filter bag filled with ceramic rings. Surface area and pores sized to accommodate bacteria necessary for biological balance and to remove toxic ammonia and nitrite. Helps produce crystal c...

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Value Pack of 4! Ready-to-use nylon filter bag filled with ceramic rings. Surface area and pores sized to accommodate bacteria necessary for biological balance and to remove toxic ammonia and nitrite. Helps produce crystal clear water.

  • Pack of 4 Penn Plax Cascade Nylon Filter with Biological Ceramic Rings
  • Convenient, ready-to-use filter bags for use with your Cascade cannister filter.
  • Contains Bio-Ring® biological ceramic rings to remove ammonia & nitrites.
  • Filter media fully enclosed in a disposable nylon-mesh bag.

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