About Kratky Nutrient Solution

Kratky Nutrient Solution is an independent information site about one subject: the nutrient solution used in Kratky hydroponics.

What this site does

The Kratky method is a passive way of growing plants in water, developed by Bernard Kratky at the University of Hawaii. It needs no pumps or electricity, but it depends completely on the solution mixed at the start. This site explains that solution in plain English: what goes into it, how to mix it, how to measure its strength and pH, and how to keep it working until harvest.

Where the information comes from

The guides are based on published research, including Kratky's own papers, and on university extension publications. Figures such as strength and pH ranges are credited to their source, and each guide lists its sources at the end. Where sources disagree, the guides say so.

Who it is for

Home growers using jars, buckets or totes, whether you are mixing your first batch or trying to work out why a plant has turned pale or stopped growing.

What this site is not

Kratky Nutrient Solution does not sell nutrients or equipment. Some links on the site are Amazon affiliate links, and as an Amazon Associate the site earns from qualifying purchases. That never changes what the guides say.

The site is owned and operated by Portside Marketing, LLC.