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

These work well to replace the OEM filters that came with my Betta fish tank. No complaints, perfect fit, water stays clean. The tank I have requires 2 so this will only last 3 months for me rather than the 6 months that is advertised. Not really an issue though. Happy so far with these filters.

Not sure if it keeps water any cleaner. Make sure you find the right size filter for the tank you have.

Expensive!!! Don’t filter worth a crap!! Have to be changed too often! Will never buy this type of filter again!! Fully plan on changing filter in our current tank as soon as these filters are used up!

The water looked dirty after use. For the second time we had to soak the filter and rinse 3x until the black junk is clear then it worked better.

It works!

it works

These fit my filter as described and arrived quickly.

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

Very good

Worked well