Detail a good working biogas digester?

Has anyone found any good links or info on biogas digesters that are capable of running a house? I have a lot of links but I would like to find some really complete home digester information. I have a ready source of bio material, the base of which is seaweed seeded with cow manure. Any good info out there?

Anonymous2008-04-12T05:11:36Z

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Back in college I built one using plans from "Mother Earth" or "Foxfire". It consisted of two 55gal barrels for the digester's and a large tractor inner tube for storage and as a pressure tank. Production seldom met demand so we had a propane tank for back-up. This was another problem because different BTU content and air fuel mixes. RScott