Comparison of Dirt Maker Worm Bin Models
The vermicomposting rate of a worm bin is determined by its vermicomposting area, the properties of its feedstocks, its worm biomass density, and environmental conditions such as bedding temperature. Worm biomass density will max out at about 2 lbs/sq ft. At this density and suitable environmental conditions, if worms are fed rich food like spent grain or partially composted manure, they will eat about half their weight each day, and watering will be required. Under the same conditions, if they are fed nothing but fruits and veggies, they will eat about their weight each day, and watering might not be required. The values for vermicomposting rate in the table below reflect this approximate range. The values for vermicompost output assume maximum worm biomass and favorable environmental conditions.
|Vermicomposting area (sq ft)||14.1||37.2|
|Vermicomposting depth (ft, in)||2' 0"||2' 0"|
|Vermicomposting volume (gal)||210||560|
|Vermicomposting rate (lbs/day)||15-30||40-80|
|Vermicompost output (cu ft/week)||2||5|
|Total length (ft, in)||9' 0"||18' 6"|
|Total width (ft, in)||3' 3"||5' 3"|
|Total height (ft, in)||3' 5"||3' 6"|
|Height below bottom of box (ft, in)||1' 6"||1' 4"|
|Total shipping weight (lbs)||420||900|
All Dirt Maker flow-through worm bins have a 5-year limited warranty. See the owner's manual for the warranty terms and return policy.