Tetra Whisper Replacement Carbon Aquarium Filter Cartridges, Med 6 count

I've been using these filters for my aquarium without one issue. I can tell it's doing the job as the water clears quickly.

I like redoing the filters…no plastic waste and these are so efficient at cleaning the water in our tank.

I bought the Tetra whisper fish cartridges , they are worth the money, you get three in a box, and you change the filter once a month, the water stays clear for a month, i will buy again

Just what the fish ordered

I love the price of these I'll put the charcoal in the pouch for the cost it's great and it works just fine

they fit my filter great

They're smaller than the ones I buy in the store and then you have to put the filter in the cartridge. They're not together already, which was very disappointing. Not happy.

These were substituted for what I actually ordered. You have to assemble these yourself, there is almost no media included to fill the bags, about a teaspoon full if that! I would not buy these again!

Dont get these filters cleaned my fish tank added these in my filter system and killed my fish within the hour so I definitely dont recommend this product its a complete waste of money im not very happy with my purchase.

This item was not available and out of stock. Substitution was suggested, but it was the wrong size filter.