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Tetra Whisper EX Bio Scrubber Replacement Cartridge: Large - (Fits EX30, EX45, & EX70) #26361 - Bio Media
The Tetra Whisper Bio Scrubber Cartridge is where nature takes its course. The Bio Scrubber is where the biological filtration takes place. - Bristles provide more surface area for biological conversion of toxic ammonia and nitrites to harmless compounds. - Engineered water flow path ensures water passes over entire surface for maximum contact. Tet ...
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