Fluval U Underwater Filter BioMax, Replacement Aquarium Filter Media, A495

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The Fluval U4 does not include enough ceramic media, so its a good idea to pick up some extra if you buy one. One box is more than enough to fill up the cartridge and seems like its better quality than what came with mine even though its the same brand. The ceramic media comes in a net/ mesh baggie which has to be cut open to use it in the U4, or can be used whole in other types of filters. Its nice media, its porous and the pieces are just about the perfect size and shape for medium sized filters, Ive used it in several different filters now both loose and still bagged.

Product as described. Good price.

I got the new filter when my old one broke an was skeptical that this would work as well with more pads and biomax. Works well

The product is fine and as expected, but the photo shows 170g package, but what arrived was 110g package.

Really like the small size media. Dont have anything else to say. These reviews require too many words. That is all.

This product is much cheaper here than it is at my local pet store this product does everything it says

Great product is helps keep my sisters turtle tank clean.

Product arrived quickly and is as described. Saves money and time to buy these in bulk.

We use this in our Fluval U2 Filter for our turtle. In combination with the other filter refills, it keeps the turtle clean nice for an extended period of time.