🐠 Tetra Whisper 12-Pack Bio-Bag Filter Cartridges for Small Tanks - Reliable Filtration Solution Review

Just the right size for me. Not sure how much it actually filters, but I think I'm doing the right thing for these little fish.

Use these filters in a small (1-2 gallon) goldfish tank and they won't last long. We change about once a week. Although good value for the price.

I bought these to replace the unnamed filter. They fit well and do a good job maintaining our tank. My only criticism is that their lifespan is inconsistent: 2-4 weeks in a pack I bought locally, one lasted 1 week per trolley.

I didn't calculate the dimensions and which ones at all. There should have been media, but they are already full. Since I only have three tiny fish in 10 gallons they will work so I will use them up. 5 stars because it was my mistake and they still fit. Most of the time, a filter is a filter. I was lucky they weren't entirely wrong.