Zanyzap 6 Carbon Impregnated Foam Pads for Fluval FX4 / FX5 / FX6 Canister Filter

Work great and are cheaper by the bunch.

Works great for my Fluval FX4!

Great value

They are a little more porous and hard than the fluval branded ones, but should do the trick. And much cheaper.

Haven’t used them yet we will see how they do looks like they will wrk great and what a price

Great replacement

Works the same as factory fluval filters for a fraction of price.

THESE PADS SAVE A LOT OF TIME INSTEAD OF CUTTING THEM YOURSELF......THESE ARE WAY CHEAPER THAN THE ORIGINAL FLUVAL PADS....QUICK DELIVERY....GREAT PRICE

Just as good as Fluval brand, 6 for the price of 2 Fluval. Also a good fit in canister.

This is a piece of foam. There is absolutely no carbon inside it. Wash it, the water will run clear immediately. With a carbon infused sponge, water should have a light black tint. The original pad does exactly that.