Kratky Method: 9-Step Setup Guide for Passive Hydroponic Growing
Home > Hydroponic Systems > Kratky Method: 9-Step Setup Guide for Passive Hydroponic Growing Last Updated: July 2026 | Reviewed for horticultural and physiological accuracy Quick Answer: The Kratky Method is a passive, non-circulating hydroponic growing technique that requires zero electricity, water pumps, or air stones. By suspending plant crowns in a net pot above a sealed nutrient reservoir, roots absorb water and minerals from below while developing specialized aerial oxygen roots inside the humid air gap above the receding waterline. To prevent root suffocation, never top off a Kratky reservoir back to the net pot level halfway through the crop cycle. Calculate your starting reservoir concentration using our EC…