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Ground Malt Barley
Run-to-Waste Systems: Use 5ml per liter of working nutrient solution
Engineered for serious cultivators who refuse to compromise between power and peace
or container gardens
🔹 Small – Best for 250W-400W (Compact tents)
Bluelab Electrical Conductivity (EC) Pen Preserve Ground Malt BarleyBluelab Conductivity Pen Precision Nutrient Monitoring for Healthier Plants Upgrade your gardening toolkit with the Bluelab Conductivity Penthe gold standard in measuring conductivity (EC TDS PPM CF) and temperature for hydroponics, soil farming, and more. Built on the same trusted technology as the legendary Bluelab Truncheon, this pen delivers fast, accurate, and reliable readings to optimize plant nutrition. Why the Bluelab Conductivity Pen is a
