Grodan MacroPlug - Case of 2,000 CO2 Controllers SILICIUM works great in combination

SILICIUM works great in combination with inter-canopy light

It's no secret that the heat from typical HPS grow lamps is a safety hazard

Warranty: ARBICO Organics guarantees live delivery of product

Organic Graphite/Talc - This is the carrier powder for the microbes

Power Usage: E6 - 12 Watts

Grodan MacroPlug - Case of 2,000 CO2 Controllers SILICIUM works great in combinationGrodan MacroPlugs MacroPlugs are round, 1. 5 in. with a slit that allows easy insertion of a cutting. These round plugs fit perfectly into our Gro Blocks . For best results with these Macroplugs always insert them in the Grodan Gro Smart tray . The individual cells will make sure that the plugs stay closed around the stem of your cutting. What is Rockwool? Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy like fibers and then