deep water culture

Home > Hydroponic Systems > DWC Hydroponic System: Complete Beginner Guide to Deep Water Culture (2026) Last Updated: July 2026  |  Reviewed for fluid dynamic and hydroponic accuracy Quick Answer: A Deep Water Culture (DWC) hydroponic system suspends plant roots directly inside an aerated, nutrient-rich water bath inside an opaque bucket or reservoir. An external diaphragm air pump continuously pumps air through a submerged microporous air stone, saturating the liquid with dissolved oxygen (target 8+ mg/L) to drive rapid vegetative growth without soil or timers. Maintain water temperatures between 64°F and 68°F (18°C–20°C) to prevent Pythium root rot. Dial in your DWC fertilizer strength using our EC to PPM Calculator….