Bluelab Conductivity Pen (EC or ppm) spider your plants will get the

your plants will get the optimal amounts of phosphorous and potassium for strong flowering

Experience the power of a ballast straight out of Hydrofarm’s value line

Apply every week during the growing season

Controls air conditioner or exhaust fan

The spring-loaded plastic clip won't mark surfaces and the adjustable head directs air flow where you need it

Bluelab Conductivity Pen (EC or ppm) spider your plants will get theThe ultimate handy solution for measuring conductivity! The Bluelab Conductivity Pen is the latest innovation for hand held conductivity meters. It provides a compact, quick and handy way to manage the success of your crops. The Bluelab Conductivity Pen simply tells you that your plants have the right amount of nutrient in your solution and lets you know if adjustments are needed. Display options available in C, F, EC, ppm 500 and ppm 700. Teamed with