I stand corrected, Im very surprised that I have yet to stumble across the subject being a member here for so long... My normal deffinition of impaction though is a (normally by a lizard) Build up of substrate over time blocking the digestion track, causeing pressure on the spine and eventually leading to paralization, if they live long enough for that to happen.

Ignore my first post everyone, my bad My train of thoughts were of that, not just eating one big peice.