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magnesium and sulfur which may stimulate flower and fruit development and enhance flavor
healthy root development
oxidized micronutrients and makes them available for uptake
It has a complex balance between water and air which means that it outstrips other substrates
GPF Uptake can also benefit as a foliar spray application
Grodan® Stonewool MacroPlugs™ Size:Plug Round w/ Slit (50/Bag) magnesium and sulfur which mayGrodan Stonewool MacroPlugs MacroPlugs 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.
