This research examined three anaerobic digesters: a single-stage constantly stirred (15 L; 18.8 days HRT), a two-phase intermittently stirred tank (114+681 L; 3.0+18.0 days HRT) and a three-stage (38+271+57 L; 3.2+22.6+4.8 days HRT). The systems showed high biogas production per unit digester volume (0.68 to 1.3 L biogas · L digester^-1 · day^-1; time-corrected) with high organic loading rates (2.2 to 3.4 g VS · L^-1 · day^-1). This allows for use of smaller systems (meso-scale) with high organic loading rates, when space is at a high cost, but available feedstock is plentiful. Hydrogen sulfide removal was investigated using an iron oxide column and a commercial enzyme product, BioWish™ (34.3 and 3.4 % removal, respectively). Strong correlations between three methods of feedstock analysis (hydrometer, moisture balance, and drying oven and kiln) were found; indicating the less labor/time method of measuring the specific gravity would be justifiable.