
The Kratky Method
How the air gap works, what you need, how to start plants indoors, and how to top up a long crop.
Learn the methodGrow peppers in water with the Kratky method: no soil, no pumps, no electricity.
Hydroponic Kratky Peppers
Grow peppers in water with no soil, no pumps and no electricity. Peppers are a long crop, so this site shows how to size the reservoir and top it up the Kratky way.

The Kratky method requires no pumps or electricity, so there is little equipment to buy, set up or run.
With minimal setup costs and no need for soil, this method is budget-friendly and efficient.
As the plants drink, the water level drops and leaves an air gap, so the roots take in oxygen from the air and nutrients from the solution.
There is no pump to run, but peppers grow for months. Plan a large reservoir or occasional top-ups.
Grow without soil
The Kratky hydroponic method is a passive way to grow plants, including peppers, without soil. This method relies on a passive system where plants are suspended above a nutrient-rich water reservoir, allowing their roots to absorb nutrients directly.
The Kratky method works most simply for short crops such as leafy greens. Peppers take far longer, so they need a larger reservoir or occasional top-ups of fresh nutrient solution. Kratky is also one of the best ways to start healthy pepper plants indoors, then harden them and plant them outdoors in soil. The Method page explains both.
How the Method Works for Peppers
Peppers can grow in a Kratky-style system when the reservoir is sized for a long crop. Learn how the method works, then choose a variety that fits your container.
See how the method worksWhat you'll find here

How the air gap works, what you need, how to start plants indoors, and how to top up a long crop.
Learn the method


Welcome to KratkyPeppers.com, where we're dedicated to helping you grow vibrant, flavorful peppers using the Kratky hydroponic method.
Read more: Welcome to KratkyPeppers.comLearn the air gap, the materials and how to keep a long pepper crop supplied.