You have several options with the 2213.
You can do away with the media basket. It will then operate like the other Classics w/o bypass by using two of the
#7273050 2213 lattices. This allows you to use more media because of the increased volume and again, no bypass. lescarpentier tells how it is done:
http://www.plantedtank.net/forums/eq...-increase.html
Here is another option, but I haven't read about anyone doing this. Take a look at
picture B1 on page 3. It shows a 2213 full of pads with is basically what you are wanting to do with floss. Heading
B1 on page 7 tells you how this is done. You can do this with the media basket or w/o by using the lattices.