Laughing here... "I love it, the simplicity of design, the elegance of
the milk crate, the merging of the Flintstonian period with the 21st
century is a nuclear mind bomb!"

For those who REALLY want to know the one and only waterfall filter
that is worth the time to install it you can find it here.
http://www.pondkoi.com/pond_products...ll_filters.htm

It is rigid; the sides won't collapse causing the sides to bow in like
all other filters. Why go to all the trouble to install a filter only
to have the lid not fit in a week as the ground settles? We have tried
them all in our over 300+ pond and watergarden installations. Please
trust me on this no matter where you purchase a waterfall filter.