21 1/2x24x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Plant Care/Pest & Disease Control This and all Growth Science

This and all Growth Science products are safe to use in automated delivery systems such as Dosatron® and other fertilizer injectors

treat it with CalCarb and you may be able to rescue it

It’s your plants here

You can use Boogie Blue filters for indoor

Hold function

21 1/2x24x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Plant Care/Pest & Disease Control This and all Growth ScienceNordic 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.