17x17x1 Exact MERV 8 AC Furnace Filters 6 Pack LED Apply for 2-3 waterings straight

Apply for 2-3 waterings straight then regain normal nutrient feedings

and help shield plant roots from pathogens and disease

molds and mildew (including powdery mildew)

Ordering Information HI98100 is supplied with HI1271 pH electrode

17x17x1 Exact MERV 8 AC Furnace Filters 6 Pack LED Apply for 2-3 waterings straightNordic Pure MERV 8 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 and other contaminants are removed. MERV 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters