just cut to the chase and start sipping on it. no pv required
Seriously though, my gf had a big problem with the qtip mod no matter how much filler I left in for her. My conclusion was that it got jangled around in her purse so much, it kicked the qtip out of its home, and it likes to take the filler with it. (fluval for her) Chewing might also cause this maybe not from the pressure, but the rattle.
I use it mostly to recycle my old carts, and I find that you are left with less juice (waste) in the filler because it wicks better, or because it isn't as dense.