Bluelab - PH Pen aqua pebbles Removes hot and stale air

Removes hot and stale air

GreenDream-1 is a single-bottle that runs from seed to harvest

created in the UK by a company who have one of the top four chemists in the world working with them who formulates fertilisers for many of the worlds record breaking food crop producers

ensuring fresh air circulation

Bluelab - PH Pen aqua pebbles Removes hot and stale airA 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