Bluelab pH Pen green light It features an adjustable brass

It features an adjustable brass spray nozzle

resulting in bigger plants and larger yields

Powerful pure fertility components have been arranged into three complementary formulas that when used together give the grower the ability to adjust inputs as necessary based on plant stage and environmental conditions

Micro is comprised of a high quality nitrogen and calcium base

Bluelab pH Pen green light It features an adjustable brassA hardy, compact pH and temperature pen Perfect for quick and easy pH and temperature readings direct from your solution Fully waterproof not just water resistant Simple two point calibration process for accuracy One year peace of mind warranty Automatic temperature compensation for accurate readings everywhere Auto off function to extend battery life 1 AAA battery included simply power on and go