18x25x1 Pleated MERV 13 Air Filters 3 Pack Grow System/ Trays/ Reservoirs and includes instructions

and includes instructions

Preservatives have been added to the medium to reduce the possibility of mold

Angled anchors

and allows for rapid absorption of nutrients

Transition to Flower – 10 ml/gallon

18x25x1 Pleated MERV 13 Air Filters 3 Pack Grow System/ Trays/ Reservoirs and includes instructionsNordic 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