Bluelab® Conductivity Pen (EC or PPM) Base Nutrients when applied at the right

when applied at the right rate and in the right conditions

Drain completely and refill reservoir with fresh nutrient solution

Traditional PK spike promotes maximum bud bulk

In its natural state

Bluelab® Conductivity Pen (EC or PPM) Base Nutrients when applied at the rightBluelab PENCON Conductivity Pen and Digital TDS Meter, Water Tester for Temperature and Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit for Hydroponic System and Indoor Plant Grow Measuring conductivity and temperature, the Bluelab Conductivity Pen keeps track of two fundamental aspects that determine your plants' ability to thrive. With the Bluelab Conductivity Pen (EC or ppm) you'll never have to guess your nutrient concentration again. This is