20x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Growing Media Weight - ~3

Weight - ~3

ONA Carbon-Air is the latest in environmentally friendly odor control

BotryStop WP has a unique mode of action in that it aggressively occupies the same ecological space as plant pathogens and will out-compete them for nutrients

capturing that essential air-to-water ratio for your biggest growth yet

Coverage will vary based on application rate

20x21x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack Growing Media Weight - ~3Nordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.