11 1/4x11 1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack beneficial microbes Bloom Part B (0-4-2) is

Bloom Part B (0-4-2) is part of Rx Green Solutions' 4 Part Professional Nutrient Series

or the full 10

Optimum conditions: 64-77° with RH of 70%

Gradation inside to accurately assess optimal water level

11 1/4x11 1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 12 Pack beneficial microbes Bloom Part B (0-4-2) isNordic 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.