Optimizing Nutrient and Medium Flow in Nutrient Film Technique Hydroponics with A Microcontroller for The Growth of Red Lettuce (Lactuca sativa var. crispa)Muhidin, Aniek Many, Machmudi and Faridlotul HasanahBIO Web Conf., 201 (2025) 02008DOI: https://doi.org/10.1051/bioconf/202520102008