17x27x1 Exact MERV 13 AC Furnace Filters 6 Pack X Nutrients Grow Spray 1 Gal which is activated in several

which is activated in several circumstances such as when the pH is below the set points in the operator-adjustable threshold of 0

PhysioSpec Indoor

Consistent

Elements Grow is a high nitrogen formula developed to encourage vigorous stem and leaf growth

12 hour REI (restricted entry interval)

17x27x1 Exact MERV 13 AC Furnace Filters 6 Pack X Nutrients Grow Spray 1 Gal which is activated in severalNordic 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