17x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack ac-dehumidification-humidification Amendment soils to increase aeration

Amendment soils to increase aeration and moisture retention

to ensure your plants get a safe and effective product

CO2 and also provides an accurate VPD measurement

At this point they will make noise or show signs of wear

• Use in soil container gardens at 7-10 ml per gallon of water

17x21x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack ac-dehumidification-humidification Amendment soils to increase aerationNordic 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.