21x22x1 Exact MERV 7 AC Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs 1" FNPT outlet includes garden-hose

1" FNPT outlet includes garden-hose adapter

use the KCI solution to store the pH pen/probe after use and hydrate monthly

leftovers and more

Vermicrop then fortifies the mixture with Fossilized Kelp to increase calcium levels

21x22x1 Exact MERV 7 AC Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs 1" FNPT outlet includes garden-hoseNordic Pure MERV 7 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 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters