Review on 🔍 Fluval C4 3-Pack Poly Foam Pads for Enhanced Filtration by Renee Walters

I have been using this brand of filter mat for some time, around 2 years on this C4 model. My previous filters were canister filters but after some back surgery they were too cumbersome and mandatory. Now I only use HOB/Hang On Back type filters so they are much easier to maintain regularly. These pads are double sided. Style composed of foam side and other polyester material. I don't use foam alone as I have slightly smaller fish, I find foam is just better for much larger fish etc.