14x20x1 Pleated MERV 13 Air Filters 3 Pack Controller For harder soils

For harder soils

• Wick (x1)

• Extremely high levels of organic nutrients

#4 perlite

Dutchpro Silica - Von Liebig’s Special is highly concentrated and uses nanotechnology for an increase in effectivity

14x20x1 Pleated MERV 13 Air Filters 3 Pack Controller For harder soilsNordic Pure MERV 13 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, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200