Top Fin Retreat RF-S Filter Cartridges (Small) Refill for Desktop Aquariums with Small Retreat Filters - 8.1in x 1.9in (6 Count)

We bought a Betta tank from PetSmart, and needed new filters. Found these and they work d great at a fraction of the price. Will buy again when I run out.

I bought the top fin fish tank that comes with one filter. My tanked looked awesome! I switched out some water once a week and really didn’t even want to do a complete clean at 4 weeks because it was sparkling. I do a full clean and replace the filter with one of these. Within a few days it had started to look a little funky and within a week I had to do a complete change. I hoped that filter was a dud and tried a new one. I’m less than 24 hours in and the tank is already showing signs of muck. I’m really disappointed :(

Good quality. Fit well

love that it comes with more than one! makes my life so much easier. fits perfectly in my tanks filter slot!

quality is what is expected

Great product

I love that came quick and is great doe that price

We use these for a 2.5 gal. tank with a male Betta. These filters work well and the water remains clear for 1 month. Please be sure to rinse a new filter with clean water to remove all charcoal dust before use.

Expensive

Gets the job done and excellent quality!