Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Size:Bluelab Conductivity Pen Includes two plastic tank washers

Includes two plastic tank washers and 12 ft of CO2 dispensing line

and it is all you will ever need

Then add a fully functional lighting controller (via trigger cordsets) that includes a high temp shut-off

Water Winds

0 EC (60 CF

Bluelab® ppm Pen — Now Bluelab® Conductivity Pen Size:Bluelab Conductivity Pen Includes two plastic tank washersMeasures 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: 0. 1 EC, 10 ppm (500 ppm), 10 ppm