Grodan Stonewool MacroPlugs (Case of 35 Bags) Environment Monitor EC regularly and adjust

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

Honors the full color spectrum of light

High-output 11-gpm flow rate at 40 psi is unmatched by other trigger valves

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

The proven industrial strength odor neutralizing ability of Ona Gel has now been combined with a new exciting scent

Grodan Stonewool MacroPlugs (Case of 35 Bags) Environment Monitor EC regularly and adjustMacroPlugs 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.