Grodan Stonewool MacroPlugs (Case of 35 Bags) Environment High-output 11-gpm flow rate at

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

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

Durable and corrosion-resistant materials

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

Honors the full color spectrum of light

Grodan Stonewool MacroPlugs (Case of 35 Bags) Environment High-output 11-gpm flow rate atMacroPlugs 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.