Tetra Whisper Bio-Bag Filter Aquarium Cartridges, Medium Filter for Freshwater and Marine Fish, Removes Odors and Discoloration, Ready to Use, 3 Medium Green Filters

These filters work perfectly! They keep the water clean and clear, and they’re super easy to replace. Great value for the price!

they work well

Good product for my turtle tank.

They are the exact filter for my hob filter.. would totally recommend to anyone who replaces their filter. I started making my own so no longer use these but they are exactly as described

It's good at catching any dirt or debris in the tank and the filters last for a while. The main downside is that filters are covered in charcoal and need to be rinsed thoroughly before use or the new tank water turns gray upon use.

Amazon is amazing. Such quick shipping. Thanks to all the hard working employees. The filters are very good and ready to use, no messy charcoal to mess with. I recommend this seller.

Filters works amazing like them will definitely get more

These are amazing! Fish tank water was tea-colored for months with a different filter .. put these in and in 2 days water is CRYSTAL CLEAR .. amazing. Didn’t even have to change the water.