Review on 🐠 CorisRX Lifestyle Aquarium Filter Media Pad – Enhancing Your Aquarium's Water Quality with Premium Sponge Foam by Amanda Edwardz

Nice filter media3 with different degrees of coarseness - I think it's from medium to fine to finer. I don't think it's coarse or superfine. This is great for updating filter boxes. Simply cut to required size. I use scissors and a utility knife to trim to size. I like that all 3 different roughness levels are included in one rather than having to buy and treat separate ones. It's a rigid spacer, so it's best suited for applications where you just plug it in. It won't crumple well. Very happy with this medium.