18x20x2 Furnace Air Filters MERV 12 Pleated Plus Carbon 12 Pack nutrients and supplements Leaf Green is recommended for

Leaf Green is recommended for plants that have difficulties during their initial development

it may be hard to tell just by sight

Hortilux uses a glass that allows the UV light to pass through benefiting plant growth

Brewkit is refrigerated for maximum freshness

18x20x2 Furnace Air Filters MERV 12 Pleated Plus Carbon 12 Pack nutrients and supplements Leaf Green is recommended forNordic Pure 18x20x2 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer. This results in less flow restriction and 33% more surface area for cleaner smelling air. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material