The Kratky method is a passive, non-circulating hydroponic technique where plants grow above a reservoir of nutrient solution without pumps or electricity. As the plant consumes the solution, an air gap forms below the net pot, delivering oxygen directly to the roots.
Key Facts
- No pumps, electricity, or timers required
- Air gap forms naturally as plants drink the nutrient solution
- Lowest cost and simplest setup of any hydroponic method
- Best for leafy greens, herbs, and short-cycle crops
- Reservoir is filled once and topped up as needed β minimal maintenance
- Developed by B.A. Kratky at the University of Hawaii