Bluelab Conductivity EC Pen hydroponic nutrients the easy-to-follow calibration process is

the easy-to-follow calibration process is the same for all Bluelab pH meters and pens

8 cubic feet of tumbler volume

Many Applications

Our DBT Model 4 also features a timer valve so you can set it and forget it and not worry about over trimming your precious flower

Bluelab Conductivity EC Pen hydroponic nutrients the easy-to-follow calibration process isIntroducing The Conductivity EC Pen By Bluelab The Bluelab EC or PPM Pen provides an accurate reading of the nutrient levels in your plant's solution and alerts you when adjustments are necessary. To ensure optimal plant nutrition, it's essential to have a high quality nutrient and measure the conductivity regularly. To avoid over diluting or over concentrating the solution, it's recommended to change the entire reservoir every 7 days and add