Grodan Macroplug (50 cubes per bag) Water Pumps & Accessories This easy to use CO2

This easy to use CO2 controller determines precisely when to activate and shut-off CO2 generators to maintain user-defined LOW and HIGH CO2 values in the grow room

Made from aluminum and can be bent to custom widths for optimal reflective patterns

high quality medium time after time

while fending off potential damage from abiotic environmental stressors

and Bloom nutrient products

Grodan Macroplug (50 cubes per bag) Water Pumps & Accessories This easy to use CO2Grodan Macroplug are great and easy to use for cuttings. Full side slit enables easy insertion of the rooted cutting. Fits Gro Block holes and also the cellular side of the Gro Smart tray(keeping the plug firmly closed around the stem of the cutting).