Bluelab - PH Pen Green Planet Experience the convenience and effectiveness

Experience the convenience and effectiveness of Pure Harvest CocoPeat 8 Plugs and watch your plants thrive like never before

Unfortunately they do not distinguish between the “bad biology” and beneficials

wherever you are in the world you will have control over your tent

Make 30 pieces total with each set

Bluelab - PH Pen Green Planet Experience the convenience and effectivenessA compact and robust user friendly handheld pen which takes measurements in increments of 0. 1 pH and is fully temperature compensated to ensure accurate readings every time. Fully waterproof rather than merely water resistant, the Bluelab pH Pen is designed to float if dropped into a reservoir. Temperature display in C or F selectable. Hold function keeps the pH reading on screen for as long as required. Easy to calibrate, and calibration check mark