Grodan Stonewool MacroPlugs (Case of 35 Bags) HGC706120 accurate pH readings range between

accurate pH readings range between pH 3

Pure Blend  Tea is enhanced and fortified with a premium blend of ultra-soluble humates

This means that both versions pass strict testing for Saponin

but can still be subject to attacks from smaller microbes such as bacteria

or lighting adapters

Grodan Stonewool MacroPlugs (Case of 35 Bags) HGC706120 accurate pH readings range betweenMacroPlugs 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.