10x20x1 Pleated MERV 12 Air Filters 6 Pack spl_cg but shifted ratios on the

but shifted ratios on the NPK to allow for the 2-4 week vegetation time that indoor growers are accustomed too (versus the 2-3 month outdoor vegetation time)

Heavy duty construction with galvanized steel

It offers full UV protection and crisp contrast

Get the best of both worlds with the organic quality and the hydroponic quantity

demanding applications for the bloom stage

10x20x1 Pleated MERV 12 Air Filters 6 Pack spl_cg but shifted ratios on theNordic Pure MERV 12 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different