Kratky Nutrient Solution Guides

Each guide answers one question about the nutrient solution in a Kratky container, in roughly the order you meet them: what it is, what to buy, how to mix it, how to check it and how to keep it working until harvest.

The guides

• Kratky Nutrient Solution Basics: What It Contains and Why
  What the solution contains and why garden fertilizer will not do the job.
• Choosing a Nutrient for Kratky Hydroponics
  One-part, two-part or three-part, powder or liquid, and how to read the label.
• Water for Kratky Nutrient Solution
  Tap, well, RO, distilled or rain water, and how hard water changes the mix.
• How to Mix Kratky Nutrient Solution
  Step by step: measuring, the order to add each part, and filling containers.
• EC and PPM for Kratky Nutrient Solution
  What the numbers mean, why ppm meters disagree, and target ranges by crop.
• pH for Kratky Nutrient Solution
  The range to aim for, how to test it, and how to raise or lower it.
• Topping Up and Replacing Kratky Nutrient Solution
  The air gap, how to top up without drowning roots, and when to start over.
• Kratky Nutrient Solution by Crop
  Leafy greens, herbs and fruiting plants: strength, pH and volume.
• Kratky Nutrient Solution Problems and Fixes
  Yellow leaves, burnt tips, algae, root rot and smelly solution.
• Supplies for Mixing Kratky Nutrient Solution
  Meters, test kits, pH adjusters, measuring tools and containers.