On 21st June 2025, Mul Biotech Farms organized a landmark demonstration in Kalimpong, West Bengal, to introduce an integrated aquaponics–hydroponics system for the Eastern Himalayas. This initiative has become a reference point for how small farming communities in difficult terrains can transition toward circular agriculture, where every input is recycled and efficiency is maximized. The Context: Farming in Fragile HillsThe Eastern Himalayas are facing increasing pressure from climate change, erratic rainfall, soil erosion, and water scarcity. For small and marginal farmers, conventional agriculture has become risky and often unsustainable. Landholdings are fragmented, chemical inputs are expensive, and younger generations