Photo 1 of xbbwmrs 12 Count Assembled Large Filter Cartridges for Tetra Whisper Bio-Bag Filters 10i 20i 40i IQ20/30/45/60 PF20/30/40/60, Large Replacement Filter Cartridges for Tetra Whisper Filters & Aquariums

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Photo 1 of xbbwmrs 12 Count Assembled Large Filter Cartridges for Tetra Whisper Bio-Bag Filters 10i 20i 40i IQ20/30/45/60 PF20/30/40/60, Large Replacement Filter Cartridges for Tetra Whisper Filters & Aquariums Photo 2 of xbbwmrs 12 Count Assembled Large Filter Cartridges for Tetra Whisper Bio-Bag Filters 10i 20i 40i IQ20/30/45/60 PF20/30/40/60, Large Replacement Filter Cartridges for Tetra Whisper Filters & Aquariums Photo 3 of xbbwmrs 12 Count Assembled Large Filter Cartridges for Tetra Whisper Bio-Bag Filters 10i 20i 40i IQ20/30/45/60 PF20/30/40/60, Large Replacement Filter Cartridges for Tetra Whisper Filters & Aquariums