18x24x1 Pleated MERV 13 Air Filters 3 Pack MH These reservoirs are extremely thick

These reservoirs are extremely thick and withstand well to cold and shipping

Perlite and Dolomite Limestone (pH adjuster)

VLGR Technology – Delivers energy efficiency and allows for the smoothest environmental control over your grow

hand-trimmed quality is easily achieved

Late Blight (Pseudomonas syringae)

18x24x1 Pleated MERV 13 Air Filters 3 Pack MH These reservoirs are extremely thickNordic 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