14x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack light Some cultivars and growing conditions

Some cultivars and growing conditions may require higher doses of Calcium

Quickly sort your harvest by loading the kit starting with the largest size sieve on top and firmly shake until your material is finished sorting

± 2% Full scale (for EC and TDS)

Increased intensity in red

High red light ratio for healthy plant growth

14x27x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack light Some cultivars and growing conditionsNordic 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.