My thoughts, as it always scares me to think of letting anything run wild,
eventually they would become root bound and then think of the work to fix
that?

4X8 You could put 4 different kinds of lotus in there, in big pots that are
still physically manageable. The clay (since clay seems to be a problem)
would be contained and/or could be covered with weed fabric and river rock
if the flow disturbs it. ~ jan

See my ponds and filter design:
http://users.owt.com/jjspond/

~Keep 'em Wet!~
Tri-Cities WA Zone 7a
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