This looks like something pretty cool and efficient to grown Phalaris with, using the waste product of fish to fertilize the plants above.
http://aquasprouts.com/about.php--Shadow attached the following image(s):
aquagrow.jpg
(49kb) downloaded 42 time(s).Throughout recorded time and long before, trees have stood as sentinels, wise yet silent, patiently accumulating their rings while the storms of history have raged around them --The living wisdom of trees, Fred Hageneder