Fig. 2 also presents the dynamic changes of total carbon during the decomposition process of fresh FVW. Drastic drop of total carbon was observed after 2 weeks in earthworms’ treatment, which is different from the control treatment that revealed a slight decrease of total carbon during the entire process. In addition, distinct differences in total carbon between two groups were initiated from the 2nd week, which is similar to the pattern of electrical conductivity. This common trend may suggest that the 2nd week is a demarcation time distinguishing the vermicomposting and control system. Similarly, Mainoo et al. (2009) reported that colonization of pineapple waste usually began from the 3rd week in vermicomposting period. At the end of composting, total carbon content decreased by 23.5% was recorded in the treatment without earthworms, as comparison with the initial substrate. Contrastively, vermicomposting showed 4-fold decreases than the control. This result proves that epigeic earthworms can accelerate the loss of total carbon during vermicomposting practices (Suthar, 2009, Fernández-Gómez et al., 2010a and Lazcano et al., 2008).