Grodan Round Macro Plugs w/Slit, case of 2000 LUXX Bar Nordic Pure 20x25x6 Aprilaire Space-Gard

Grodan Round Macro Plugs w Slit, case of 2000 LUXX Bar Nordic Pure 20x25x6 Aprilaire Space Gard Nordic Pure 20x25x6 Aprilaire Space Gard 2200 Replacement Air Filters Part 201 MERV 13 Plus Carbon are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home Two way humidity control means the pack both adds moisture when the environment is too dry and absorbs moisture when it's too humid — actively maintaining the target 62% RH rather than simply drying the air like a one way desiccant They fit perfectly into the hole of any standard rockwool block or any other type of growing medium These rockwool plugs feature a slit for easy insertion of rooted cuttings