Bluelab® ppm Pen — Conductivity Pen Light Timers pH term describes the relative

pH term describes the relative alkalinity and acidity of the water and root zone media your plants grow with

These fans are designed for demanding continuous operation with carbon air filters and long duct runs

More consistent heating with fewer hot spots than other seedling heat mats on the market

REVOLUTION: 1

vigorous growth with pH Perfect® Sensi Coco Grow

Bluelab® ppm Pen — Conductivity Pen Light Timers pH term describes the relativeBluelab ppm Pen Conductivity Pen Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is optional. Fully waterproof. Auto off function and hold reading function. Automatic temperature compensation. Units: EC, 500 ppm, 700ppm, C, F. Range: 0. 010. 0 EC, 05000 ppm (500 ppm), 07000 ppm (700 ppm) and 050C 32122F. Resolution: