An IoT-based smart dosing system for hydroponic agriculture is an automated solution designed to monitor, control, and optimize nutrient dosing, pH levels, and water quality in hydroponic farming. Since hydroponics relies on nutrient-rich water instead of soil, maintaining precise conditions is critical for healthy plant growth. The smart dosing system uses sensors, controllers, and IoT connectivity to collect real-time data on parameters such as pH, Electrical Conductivity (EC), water temperature, and humidity. Based on this data, it automatically dispenses the right amount of nutrient solution or adjusts pH levels, ensuring optimal growth conditions.