12x22x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack pumps-and-irrigation-supplies It is suitable for both

It is suitable for both indoor and outdoor growing but is most recommended for indoor use for crops requiring a lot of water

This portable refractometer is a convenient way to measure the Brix level of your plants

sediment-free water

and liquids

• Lightweight

12x22x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack pumps-and-irrigation-supplies It is suitable for bothNordic Pure pleated AC air filters are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home or office. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, baking flour, mold spores and other contaminants are removed. Our filter media prevents the growth of bacteria or mold, resulting in a much healthier living space.