<![CDATA[ Organic waste has significantly increased, especially in Indonesia, reaching 14.73 million tons in 2023. The accumulation of organic waste can serve as a breeding ground for various disease vectors, hence the need for an effective organic waste management system. One economical method that can effectively manage organic waste is the use of decomposer fluids or decomposer organisms such as BSF larvae. This study was conducted to determine whether the addition of Effective Microorganism (EM4), Local Microorganism, and Eco-Enzyme decomposer fluids affects the bioconversion rate of Black Soldier Fly larvae and the quality of the resulting compost. This research is a true experimental study. The variables tested in this study were the type of decomposer fluid substrate as the independent variable and the Waste Reduction Index, Substrate Consumption, and compost residue quality as dependent variables. This study tested the influence and differences in variants between variable X and variables Y1 and Y2 using Exponential Regression Test and ANOVA Test. The highest WRI value (16.11%/day) was obtained from the eco-enzyme group, and the highest SC value was obtained from the eco-enzyme group (96.65%). Based on the results of the Exponential Regression Test, it was found that the administration of decomposer fluid substrates has a very strong positive correlation with WRI and SC values. Based on the results of the ANOVA test, it was found that there were significant differences between the independent variable and the dependent variable. And the quality of the compost residue from the 4 experimental groups met the SNI 19-7030-2004 standard. This study concludes that the administration of decomposer fluid substrates in the BSF larvae decomposition process has a strong influence on WRI, SC, and compost residue quality.]]>
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