I am currently working on a science fair project on composting and what variables can improve the process. I have 4 eight litre piles (3.5 litres carbon products, 3.5 litres nitrogen products, 1 litre of finished compost). The first week the piles were ranging from 15-20 degrees celsius(the temperature around them was approx. 13 degrees celsius). However, after I turned the piles at the end of the first week the temperatures dropped to a range of 15-13 degrees. It has continued to stay like this and the second week is almost over. Most of the veggies are no longer distinguishable and I was expecting the piles to reach the thermophilic stage by now (when the piles really start to heat up,and it is supposed to reach this stage in under a week). The only problems I can think of is the small size(a cubic meter per pile was not possible)or the large amount of liquids in the boxes.