Conductivity Pen - EC or ppm Subsonic Harmonic Made in Germany

Made in Germany

CALiMAGic delivers the power of calcium and magnesium in a form that prevents secondary nutrient deficiencies and builds stronger plant structure

Onboard ballast 'odometer' that will count the number of hours the ballast has been used

This product is allowed for use on organically managed lawns and landscapes

you might notice that they’re bare and spindly-looking

Conductivity Pen - EC or ppm Subsonic Harmonic Made in GermanyThe Bluelab ppm Pen simply tells you that your plants have the right amount of nutrients in your solution and lets you know if adjustments are needed. To feed plants well, we need to know what we're feeding them. Start with a quality nutrient. Measuring the conductivity every day is the best way to avoid over diluting or over concentrating your nutrient solution. Completely change the reservoir solution every 7 days. Top up the nutrient level between