16x21x1 MERV 13 Plus Carbon AC Furnace Filters 12 Pack X Nutrients bloom We recommend using this filter

We recommend using this filter in conjunction with our 10'' fan for optimum efficiency

and increase cuttings overall survival rates

Our Plugs are engineered for moisture retention and aeration for ideal rooting and growth

Moderate Infestation/Speckling: 5+ per square foot

Mycorrhiza is a powerful root enhancer that occurs naturally in forest soils where the humus content is high and the soil is thriving with microbial life

16x21x1 MERV 13 Plus Carbon AC Furnace Filters 12 Pack X Nutrients bloom We recommend using this filterNordic 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.