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except for energy the system COULD be closed...some of the plants that the fish poop feeds could feed the fish. The fish guts (when the fish are harvested, could feed black soldier grubs, which in turn could feed the fish)

yeah I know...It's a bit complex.

Now get off my lawn...I'm gonna let guinea pig tractors cut it... and fertilize it...and then harvest the guniea pigs (and the quail) and feed them to the black soldier ants and feed their grubs to the fish and feed their poop water to the plants, and......

endless circle..

NO WAIT...it's not a circle at all.
it's a moibus strip.

you should check out the numbers on rabbits if you haven't yet. one of the best doomsday preppers on the show doomsday preppers had a rabbit based lifestyle

start at 14:15 for the rabbit guy

soldier fly larvae would be an excellent food for the fish.

guinea pigs...make rabbits look like nuns..

I would probably need two or three for a good meal though, that's a lot of gutting and skinning. You would need an Incan woman to go with them. Did you see the part where he was making his own rabbit manure natural gas?

cavys (guinea pigs) weigh anywhere form a couple of pounds to about seven
Pretty much a meal.

fun fact..there are no wild ones....like horses they are all domesticated.
unlike horses none are feral.

methane is the product of biological decomposition...either in your gut (fart) or in a compost pile.

A typical breakdown of the chemical composition of farts is: Nitrogen: 20-90% Hydrogen: 0-50% (flammable) Carbon dioxide: 10-30% Oxygen: 0-10% Methane: 0-10% (flammable)

yay..
so?

how long have you been so interested in farts?
does that qualify as being anal?
is there something you need to tell us?

I am far to regular to be anal retentive. ;)
Since you don't watch TV you may not be familiar with Mythbusters, they did a pretty great episode on the subject.

If you're pulling food out, you're gonna need to put nutrients in. Since there is nothing that is 100% efficient, you need to put in more nutrients than you pull out in food, and then deal with some waste too.

Nothing is perfect, but plenty is good enough.

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