Bluelab Conductivity Pen LED Mega PK is designed to

Mega PK is designed to stimulate more than just bulk

Both end flanges are aluminium

stock tanks

and easy to use

and featuring Eddha‑Fe (iron) plus humic and fulvic acids

Bluelab Conductivity Pen LED Mega PK is designed toThe Bluelab Conductivity Pen is a compact and reliable tool for accurately measuring the strength of nutrient solutions in hydroponic systems. It provides instant readings of EC, CF, and PPM across multiple scales, allowing growers to maintain precise nutrient concentrations for optimal plant health and productivity. With a waterproof, floatable design and automatic temperature compensation, the Conductivity Pen is built for daily use in demanding