Bluelab EC Pen Nutrients by Brand/ADVANCE HYDROPONICS OF HOLLAND/Multi Purpose Nutrients Designed to maintain an ideal

Designed to maintain an ideal growing temperature

Naturally derived Biocide

Thermometer/Hygrometer

The 60mm carbon bed of virgin activated granular carbon has been developed to last under harsher conditions

Bluelab EC Pen Nutrients by Brand/ADVANCE HYDROPONICS OF HOLLAND/Multi Purpose Nutrients Designed to maintain an idealThe ultimate handy solution for measuring conductivity (EC or ppm) and temperature! The Bluelab Conductivity Pen simply tells you that your plants have the right amount of nutrient in your solution and lets you know if adjustments are needed. To feed plants well, we need to know what we're feeding them. Start with a quality nutrient. Measuring the conductivity every day is the best way to avoid over diluting or over concentrating your nutrient