11 1/4x11 1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack extraction Effective as a final flush

Effective as a final flush to clean growing media

A step up from basic coconut coir for all your hydroponic growing

• Improves plants ability to absorb other nutrients

so it is best to be added to solution prior to other nutrients - or diluted before adding to a nutrient solution

see below for compatibility

11 1/4x11 1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 12 Pack extraction Effective as a final flushNordic 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.