10x25x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Promote Aerorock is a much better

Aerorock is a much better alternative to perlite

Perlite #3 can be used as a stand-alone medium in drip systems or as a mix-in element with other growth mediums

(Co) Cobalt

Black spot of roses (Diplocarpon rosae)

Wide range of lamp options sold separately

10x25x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack Promote Aerorock is a much betterNordic 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.