18x20x2 Furnace Air Filters MERV 8 Pleated Plus Carbon 3 Pack grow-light-ballasts CMH technology incorporates spectral wavelengths

CMH technology incorporates spectral wavelengths not found inside the PAR range

- Works well with kelp meal fertilizers

Nitrogen is a major component of every protein molecule

collodial silver or harsh chemicals that can hurt your plants or microbes

The scale features a dual read out of pounds plus ounces and kilograms on the dial face

18x20x2 Furnace Air Filters MERV 8 Pleated Plus Carbon 3 Pack grow-light-ballasts CMH technology incorporates spectral wavelengthsNordic Pure 18x20x2 MERV 8 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