Top Fin Тор Fіn Fіsh Тank Еlеmеnt Fіltег Сaгbоn Сaгtгіdgеs ЕF-S 6 Моnth Suррlу 2.1 х 3.7

Would buy again

Very effective filter cartridges.

Knock off product

Came quickly and work great!

You can buy 12 of these filters for $15 on the Petsmart website.

It is opuso expenses if you go to pet smart you can get it for 12 months and it will only cost 14 dollars

So happy that I finally purchased a box of these. Nothing wrong

They work very well for my Betta tank setup.

Works great

Although this still isnt the best price around (4 stars for the price), its better than getting it directly from a pet store, so I will give it that. Fit in my unit perfectly since its by the manufacturer, and did not harm my fish at all. Worked well, no complaints.