18x36x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Grow Light Reflectors Not only did this make

Not only did this make the spectra better

It is designed to be mounted outside of the space to be monitored

it can be used via foliar or root application and will work its way throughout the entire plant to prevent disease and attack existing disease above and below ground

MOUNTING HEIGHT: 6"(15cm) Above Canopy

and 6" inline fans

18x36x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack Grow Light Reflectors Not only did this makeNordic 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.