18x25x1 Furnace Air Filters MERV 12 Pleated Plus Carbon 3 Pack AIR FILTER BOXES Low nitrogen levels reduce stem

Low nitrogen levels reduce stem elongation and enhance bud formation

We carefully lay out and cut the paper properly with the grain so they roll smoothly (instead of squaring as many other tips from inferior companies do)

This bag is offered in two sizes

Chlorophyll deficiency in the bloom stage causes fading yellowing leaves right when flowers are putting on mass at a rapid rate

18x25x1 Furnace Air Filters MERV 12 Pleated Plus Carbon 3 Pack AIR FILTER BOXES Low nitrogen levels reduce stemNordic Pure 18x25x1 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