12x15x1 MERV 13 AC Furnace Filters 12 Pack bloom nutrients Number of Tumblers: 1 Wet

Number of Tumblers: 1 Wet and 1 Dry

Endomycorrhizal fungi colonize approximately 80% of the world’s plant species

lush white root development and will maximize your germination and cloning success rate for up to 14 seeds or clones

and specific ingredients such as fish meal and crab meal

and calibration information

12x15x1 MERV 13 AC Furnace Filters 12 Pack bloom nutrients Number of Tumblers: 1 WetNordic 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