Grodan Rockwool Macro Plugs Round w/Slit CO2 Monitor Desktop 1 x 12V Power Adapter

1 x 12V Power Adapter

Potassium Sulphate

and other contaminants that can compromise performance

Higher Yields & Quality: Growers report increased yields and noticeable quality improvements over standard HPS/MH

making them a cost-effective choice for long-term use

Grodan Rockwool Macro Plugs Round w/Slit CO2 Monitor Desktop 1 x 12V Power AdapterMacroPlugs 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.