Re: Biogas Producing Holding Tank
Two 55 gallon barrels? Ah, that's a fast 900 pounds to carry aboard, equal to the weight of four more crew.
There's a reason why methane tanks work on cattle farms and pig farms, and not at the local Holiday Inn.
If you think your numbers will work, buy a couple of drums, set it up at home, prove that you've got it right and it works. Then you can start taking it around to boat shows and selling the marine version.