17_1/2x23_1/2x1 MERV 10 AC Furnace Filters 6 Pack HPS Bio·Heaven™improves the effects of all

Bio·Heaven™improves the effects of all foliar sprays and fertilizers used to feed the plant

High moisture levels in soils and around pots encourage the development of fungus gnats

Perfect for vertical farms and vegetative stages of plant cycle

Potassium Phosphate

17_1/2x23_1/2x1 MERV 10 AC Furnace Filters 6 Pack HPS Bio·Heaven™improves the effects of allNordic Pure MERV 10 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 10 furnace filters are comparable to HVAC filters with the rating of MPR 900 1000. While different companies