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Support American made products. All materials sourced and manufactured right here in the USA.
These replacement cartridges are constructed with polyester on both sides and contain extra amounts of professional grade carbon. Our carbon has been air-vacuumed, which results in a lighter more absorbent filter cartridge.
High Quality CartridgesFits Filter Models
- Tetra Whisper 20, 30, 40, 60
- Tetra Whisper 20i, 40i
- Tetra Whisper C
- Made in the USA using high quality materials.
- Pre-assembled and filled with high grade carbon for quick and easy cartridge replacement.
- Thick polyester padding for superior performance.
- In stock and ready to ship right to your door.
I had bought a cheaper filter from a online pet store which fell apart in the 50 gallon tank and we are still trying to get the pieces out. These filters are good quality and they are cleaning up the mess. I would definitely buy these over and over.
Great! I have an older tank with weirdly shaped filters,v and no other place has then in stock anymore... But you had them! Thanks!
I was frustrated having to 'build-my-own' filter cartridge each time and decided to try these. they fit perfectly, saving me time and headache! They arrived quickly and I will certainly order them again.
Absolutely wonderful! Arrived quickly, was exactly what I needed, great price. Perfect!
One of the most reasonable replacement filters you can buy. I use this generic product line for all my over the tank filters. I don't worry as much about the frequency cost in replacing my filters a little more often. Clean filters = Cleaner Tank and Happy Fish.