Hi guys, I have a question that never occurred to me until just a couple moments ago, I'm not sure if you guys would have all of the knowledge I need, but it doesn't hurt to ask.

I was doing some research about Mineralization tanks, and for the first time I heard someone refer to it as a digester. Which should have been obvious, but never occurred to me.

I am also something of a prepper, and a common way to get flammable fuels is to put waste food particles, grass-clippings, etc, into a digester and let the bacteria go at it in an anaerobic environment; Biogas. This process also produces solid and liquid fertilizers that are useful (at least for ground gardens).

My question is this: Would the process of mineralization produce similar chemical products in an anaerobic environment that it does in an aerobic environment?

I know from research that the fertilizers from Biogas production are safe and good for almost any plant; but the big question is would this stuff poison the fish? And if it does poison fish, is there at least a concentration that is safe for the fish that is also high enough to be worth it to me to do this?

Because if it doesn't poison fish (and/or the essential bacteria of the nitrogen cycle), then the product of either reaction would be safe to use in an aquaponics system. And I could not only use an aquaponics system to produce food, but usable, flammable, fuel as well. Fuel that I could use to run stovetops, water heaters, generators, etc.

This is probably a pretty big stretch, but if nothing else it is a good brain puzzle.