21 1/2x24x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Plant Care/Pest & Disease Control treat it with CalCarb and

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

You can use Boogie Blue filters for indoor

Neoprene 2" Inserts

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

although speed can be manually controlled

21 1/2x24x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Plant Care/Pest & Disease Control treat it with CalCarb andNordic 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.