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Your cart is empty.Tetra® Whisper® Filter Cartridges help keep aquarium water sparkling clean. The dual-sided mesh catches debris and fish waste, and Ultra-Activated® carbon removes odors and discoloration. Use these extra-small replacement filter cartridges in your AquaCulture® Aquarium Kit up to 3 gallons. These filters are ready to use for your convenience. To install, first rinse the cartridge under cool tap water until the water runs clear. Insert cartridge into the filter. For best results, change your filter cartridge every 2 weeks or more often if there is reduced water flow. Pack contains 4 extra-small replacement cartridges. An aquarium filter not only cleans the water your fish breathe, but it also keeps your tank looking pristine. Trust your tank to Tetra brand filtration products for cleaner, healthier water and happier fish! Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor.
Natasha Farias
2025-09-04 12:16:07
I bought small beta tank at Walmart but they don’t carry media for those filters. Amazon was the only place I was able to find this size! It fits and works for my son’s beta fish. Will buy again. Reasonable price and fast delivery.
Mira S.
2025-08-21 10:18:48
Perfect for my little 2.5 gal Betta tank
Customer
2025-08-19 18:27:07
VERY NICE IT REMINDED ME OF MY CHILD HOOD TY
Bruce D.
2025-07-17 09:34:03
Quick and easy replacements. Make sure you clean your actual filter from time to time before you replace with the replacement cartridge.
Chasity Riegel
2025-07-12 15:57:31
I've been using these filters for our small fish tank for over a year now and they work great.
NÄ-NÄ JC
2025-06-22 17:41:39
The aquarium filter works well to remove scum. I rinse the filter with my sink sprayer occasionally to clean it off and use it until necessary replacement.
Quinn Tarantino
2025-06-07 16:46:40
I have two paludariums with very small. mini pumps. These pumps are great but do not have a filter system. I bought these and created a super simple filter for my waterfall! I took a mini plant pot (1-2inch) that came with some of the little plants. In that pot I nestled one of these mini filters at the bottom and then placed the pot below the waterfall where the water comes off the rock. The plants hide the pot and the filter helps to keep the water clean! These are perfect, easy to use, and easy to change! While I may not be using them in the traditional manner I feel these are fantastic if you have an unusual project that you need to create a filter for.
Justine G
2025-05-29 17:01:19
Perfect for what I needed it for.
Ilias
2025-05-28 11:40:22
works great and keeps my beta happy.
Angel Mendoza
2025-03-18 18:33:19
Es la 3era vez que las compro y me son muy útiles para la pecera del pez beta de mi hija, al cual le cambio cada 3 semanas el filtro.
Anónimo
2025-02-28 18:39:58
estos cartuchos le quedan perfecto al filtro que tengo en una pecera de 4litros con un pez betta, deja el agua cristalina hasta por 4 semanas y no deja que se haga moho. Me parece excelente conseguirlos por amazón, sobre todo porque están a buen precio, duran mucho y en otras tiendas de mascotas no hay.
Alain Charbonneau
2025-02-25 15:20:50
Filtre bien l'eau
Juvenal Medina
2025-02-10 16:46:01
Todo lo de la descripcion es correcto, funcionan muy bien. Recomendables y a mejor precio que en tiendas de mascotas.
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