Keep your aquarium clean and easy to maintain with Tetra Whisper Bio-Bag Small Filter Cartridges. Mechanical and biological filtration are essential to keep your tank clean and healthy. Tetra Whisper Bio-Bag Small Filter Cartridges effectively trap particles that can be harmful to fish and cultures beneficial bacteria, removing odor and discoloration for crystal clear water. It is disposable and part of the Whisper Power Filter Package.
Convenient, easy to use.
Traps even the smallest particles, nothing gets past this filter.
I use this small Whisper filter cartridge for both Whisper 3i Power Filter and Azoo Mignon 50 filter (diagonal fit,). It is a good little filter pad, but due to small size needs cleaning a little more often than larger sizes.
Easy Filter Changes for Small Tank Aquariums
on Oct 19, 2017
I think these are made for the smallest Tetra Whisper filter. But, they are so easy to change! No parts to save, nothing to measure, add and assemble. You just rinse the new filter then pinch, pull and toss the old one. Put the new one into the same place and you're good for another month or maybe longer. Tip for clearest water: Avoid doing your 20% water changes, your cleaning and your filter changes all at the same time. That way useful culture remains to help clear the water of your aquarium.
on Apr 27, 2018
Cannot find the filters for my 360 round Aquarium,3 gallon tank.
on Dec 29, 2017
These are very easy to change out and super affordable. Bought a year's worth!
gets the job done
on Feb 14, 2018
I replace these ever 6 weeks in my betta bowl. Keeps his water fresh. :)
on Jan 21, 2018
Only filter available for my aquarium filter, does a good job.
This product works great.
on Jan 24, 2017
I use this for my small 3 gallon fish aquarium. My friend set up the same aquarium at the same time over 3 years ago; he has lost 4 fish in that time, I'm still on the same fish. It's important for balance of good bacteria to have a good filtering system. These filters are easy to clean, easy to change and readily available at most retail pet stores.
West Palm Beach, FL
Does what it says...
on May 29, 2017
Works well enough for small tanks. Cheaper here than anywhere I've found.
Chewy has the best price on these!
on Aug 19, 2017Top 50 Contributor
My daughter needs this type of filter for her betta tank. I originally bought them at our local pet store which was over double what chewy charges. Will only buy them from chewy for now on.
on Mar 20, 2017
These fit all 3 of my mini aquariums which are from 3 different manufacturers. A little snug but they work.