Water is the foundation of every successful hydroponic and aeroponic garden. In Module 2 of Aero-Gro Academy, you'll master hydroponic water quality from the ground up — understanding pH, electrical conductivity (EC), total dissolved solids (TDS), salinity, and water temperature, and how each shapes nutrient uptake and plant health. You'll learn the difference between tap water, well water, and reverse osmosis water, and when each makes sense. Professional growers don't guess — they measure. This module teaches you how to test your water accurately, read a water report, and build a stable nutrient solution that prevents lockout. Clean, measurable water is what gives you control. Stop guessing and start growing with confidence. Because at Aero-Gro, everything begins with water.