12x25x2 Pleated MERV 13 Air Filters 3 Pack hydro-systems A quick and inexpensive option

A quick and inexpensive option for growers

Manganese (Mn)

Another feature of the angled protrusions on the containers is that they not only force roots downward to the air hole for proper air pruning

allowing you full control to dial in your gardens to specific requirements

12x25x2 Pleated MERV 13 Air Filters 3 Pack hydro-systems A quick and inexpensive optionNordic 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