Grodan Stonewool MacroPlugs (Case of 35 Bags) Environment DO NOT connect the 12

DO NOT connect the 12 volt dc power supply to the SPH-1

Calibration is simple with one push button on the meter and fresh Bluelab Calibration Solutions

and a root enhancing Bio-Stimulant derived from auxin- and cytokinin-rich Irish kelp

Monitor EC regularly and adjust accordingly based on the crop and growth stage

Grodan Stonewool MacroPlugs (Case of 35 Bags) Environment DO NOT connect the 12MacroPlugs are 1. 5 in round with a slit that allows easy insertion of a cutting. These loose round plugs fit perfectly into the Gro Block hole. For best results, always insert MacroPlugs in a tray with individual cells. The individual cell will make sure the plug stays closed around the stem of your cutting.