“The Effect of Liquid Organic Fertilizer Made from Catfish Waste on the Biomass of Lemna Sp in the Maintenance Media of Kissing Gourami (Helostoma Temminckii) on Peat Water”. 2025. Jurnal Natur Indonesia 23 (2): 85-95. https://doi.org/10.31258/jnat.23.2.85-95.