Whisper Bio-Bag Cartridge, Unassembled (XL, 4 pk) Whisper Bio Bag Disposable Filter Cartridges keep your aquarium water crystal clear, help remove odors and discoloration, and are economical and easy to use. Whisper Filter Cartridges provide superior mechanical and chemical filtration for your aquarium. Dense, dual sided mesh catches debris and fish waste. For superior and easy aquarium filtration. For use in Whisper 4 and 5, Tetratec 300 and 500.
DISCLAIMER: The results described on the testimonials on this site, are the individual experiences and personal opinions of those who have purchased and used the products. These testimonials are not intended to make any claims that the products can be used to diagnose, treat, mitigate, cure or prevent any disease or medical condition.Click here to see all reviews
Best available. by Bobby-kid09/10/2014
This is the best available product on the market since the demise of the more expensive (and more efficient) product to do the job of filtration.. I would have liked more to the box, perhaps six or eight, to save some money, but this is the only number of cartridges in a box on the market.