[tiggity]

Not that I could see, I have about 1.5" sand cap and made sure it was even before I flooded - well the back is deeper as I was going for a slope.

Right now I have filter floss stuffed in the filter chamber.

edit: The more I think about it, I think most of my plants melted and the dead leaves got sucked up in the filter (as it should be) and clogged the media faster than it normally would.