21x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack nutrients and supplements it is in fact NOT

it is in fact NOT an oil

While calcium and magnesium ions are easy for a plant to uptake

Outdoor Use

No residuals

21x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack nutrients and supplements it is in fact NOTNordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.