Lid for Tetra Bio Filters PF1-3
Replacement Lid fits the Tetra PF-1, PF-2 and PF-3 Gravity Bio Filters.
Seal is no longer included by Tetra. They state that it is not needed
Does not fit the Tetra Submersible or Pressurized filters
Maintain a healthy and clear pond with TetraPond® ClearChoice™ Biofilters. Ornamental fish can overload a pond ecosystem with ammonia and other pollutants. ClearChoice™ biofiltration removes these contaminants and ammonia using its advanced Trickle Flow and Bio Ring technologies.