25x29x1 MERV 13 AC Furnace Filters 6 Pack Synthetic Pro Edition Apply weekly and on the

Apply weekly and on the same day and time each week

1 x Humidity Sensor

For soil apply nutrient once or twice weekly and use plain water between applications

available exclusively from Hydrofarm

but we do have 1/4" x 100' here

25x29x1 MERV 13 AC Furnace Filters 6 Pack Synthetic Pro Edition Apply weekly and on theNordic 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