TankGirl
Aquarium Advice Addict
The media in my XP3 is generic media that you can get anywhere. Ceramic noodles, porous rock (like pumice) and floss. The baskets will accept whatever you place in them. I often just use loose filter floss and wad it into my Eheim 2215 instead of using their white circular pads, which are hard for me to locate here. I think most filter media can be interchangeable, even to the point of making your own HOB cartridges using the plastic frame and covering it with floss yourself.