Bluelab - EC Pen This Organic PK Booster has

This Organic PK Booster has a high concentration

Manganese - Interveinal chlorosis

These ingredients also promote exceptional root development and the formation of thicker stems

Top-Max works by encouraging cell division and increases the transport of nutrients

Bluelab - EC Pen This Organic PK Booster hasBluelab a proven track record for accuracy and reliability Provides a digital readout of the conductivity of your nutrient solution Temperature compensated for improved accuracy 4 scales to select from EC, CF, PPM500 and PPM700 Backlit display Hold reading function Made of tough plastic Simple to use and effective Simple calibration process with 30 day indicator Low battery indicator Displays the temperature in C or F Water resistant Shock resistant