10x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 12 Pack trays Built with 3 customizable channels

Built with 3 customizable channels for blooming

Special Notes * temperature limits will be reduced to actual probe/sensor limits *** For standard mode only (logging) † pH 3

As for safety

The soil went from dense clay to something almost fluffy

DO NOT apply through any type of irrigation system

10x18x1 Exact MERV 12 Plus Carbon AC Furnace Filters 12 Pack trays Built with 3 customizable channelsNordic 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.