Quote Originally Posted by urbanfarmer
Quote Originally Posted by keith_r
but they soon find that doesn't work..you need input!
I would argue that no natural system, anywhere on this Earth, requires human input to grow. I would further extend this premise to include properly designed AP systems as not needing human input (aside, perhaps, at initial construction). I have done it, the science backs it up, and it's actually a hell of a lot easier for a backyard gardener. Just food for thought...
an ap system is far from natural....
i'd like to see a zero input system that you can harvest fish and veggies from and is zero maintenance? (labor is input as well, unless you work for free and don't need any calories)

i see ponds that people think are "zero input" ecosytems,, but to balance a pond the pond owner needs to input lots of energy and effort.. i really can't see an ap system working without lots of input in at least man power and some input in feed/nutrients