Only in America would we spend 1/2 million $$$ on a Tub Grinder and back hoe to make mulch.
Good video, I've been composting and organic gardening for 27 years. I completely agree with you, this is the right way to grow plants be it in the garden or in the aquarium.
On my system I'm starting to feel that one might not be able to reach optimum fish and plant requirements in an Ebb/Flow system. I'm think constant flow might be more appropriate.